tidy-up: miscellaneous

- drop more uses of the word "just". (not enforced here)
- drop some uses of the "will" word.
- "then" -> "than".
- tests/http/testenv/curl.py: fix copy-paste typo in error message.
- pytest: replace `shutdownh` with `shutdown` in test names.
  Spotted by GitHub Code Quality.
- comment typos.
- whitespace and newlines fixes.

Closes #21830

tests/unit/unit1303.c

@@ -44,7 +44,7 @@ static void t1303_stop(struct Curl_easy *easy)
   curl_global_cleanup();
 }
 
-/* BASE is just a define to make us fool around with decently large number so
+/* BASE is a define to make us fool around with decently large number so
    that we are not zero-based */
 #define BASE 1000000
 

tests/unit/unit1609.c

@@ -46,7 +46,7 @@ static CURLcode t1609_setup(void)
      we set address using CURLOPT_RESOLVE,
      it usually marks as permanent (by setting timestamp to zero). However,
      if address already exists
-     in the cache, then it does not mark it, but just leaves it as it is.
+     in the cache, then it does not mark it, but leaves it as it is.
      So we fixing this by timestamp to zero if address already exists too.
 
   Test:

tests/unit/unit1615.c

@@ -108,7 +108,7 @@ static CURLcode test_unit1615(const char *arg)
   };
 
   unsigned char output_buf[CURL_SHA512_256_DIGEST_LENGTH];
-  const unsigned char *computed_hash; /* Just to mute compiler warning */
+  const unsigned char *computed_hash; /* to mute compiler warning */
 
   /* Mute compiler warnings in 'verify_memory' macros below */
   computed_hash = output_buf;

tests/unit/unit1625.c

@@ -52,7 +52,7 @@ static CURLcode test_unit1625(const char *arg)
     { "Encoding: a, chunked, ninja", "Encoding:", "chunked", TRUE },
     /* empty incoming header */
     { "Encoding:", "Encoding:", "chunked", FALSE },
-    /* just spaces in header */
+    /* spaces in header */
     { "Encoding:   ", "Encoding:", "chunked", FALSE },
     /* last among several with no spaces */
     { "Encoding: ab,cd,ef,gh,ig,kl", "Encoding:", "kl", TRUE },

tests/unit/unit1652.c

@@ -119,7 +119,7 @@ static CURLcode test_unit1652(const char *arg)
    * Any input that long or longer will truncated, ending in '...\n'.
    */
 
-  /* A string just long enough to not be truncated */
+  /* A string long enough to not be truncated */
   memset(input, '\0', sizeof(input));
   memset(input, 'A', 2045);
   Curl_infof(easy, "%s", input);
@@ -130,7 +130,7 @@ static CURLcode test_unit1652(const char *arg)
   fail_unless(output[sizeof(output) - 1] == '\0',
               "No truncation of infof input");
 
-  /* Just over the limit without newline for truncation via '...' */
+  /* Over the limit without newline for truncation via '...' */
   memset(input + 2045, 'A', 4);
   Curl_infof(easy, "%s", input);
   curl_mfprintf(stderr, "output len %zu: %s", strlen(output), output);
@@ -138,7 +138,7 @@ static CURLcode test_unit1652(const char *arg)
   fail_unless(output[sizeof(output) - 1] == '\0',
               "Truncation of infof input 1");
 
-  /* Just over the limit with newline for truncation via '...' */
+  /* Over the limit with newline for truncation via '...' */
   memset(input + 2045, 'A', 4);
   memset(input + 2045 + 4, '\n', 1);
   Curl_infof(easy, "%s", input);

tests/unit/unit1655.c

@@ -51,7 +51,7 @@ static CURLcode test_unit1655(const char *arg)
     static const char toolong[] =
       /* ..|....1.........2.........3.........4.........5.........6... */
       /* 3456789012345678901234567890123456789012345678901234567890123 */
-      "here.is.a.hostname.which.is.just.barely.too.long."   /* 49:  49 */
+      "here.is.a.hostname.which.is.only.barely.too.long."   /* 49:  49 */
       "to.be.encoded.as.a.QNAME.of.the.maximum.allowed.length."
                                                             /* 55: 104 */
       "which.is.256.including.a.final.zero-length.label."   /* 49: 153 */

tests/unit/unit1660.c

@@ -45,7 +45,7 @@ static CURLcode test_unit1660(const char *arg)
   struct testit {
     const char *host;
     const char *chost;     /* if non-NULL, use to lookup with */
-    const char *hdr;       /* if NULL, just do the lookup */
+    const char *hdr;       /* if NULL, do the lookup */
     const CURLcode result; /* parse result */
   };
 

tests/unit/unit1666.c

@@ -146,7 +146,7 @@ static CURLcode test_unit1666(const char *arg)
           "\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01"
           "\x01\x01\x01\x01\x01\x01\x01\x01"),
       "", CURLE_TOO_LARGE },
-    /* one byte shorter than the previous is just below the limit: */
+    /* one byte shorter than the previous is below the limit: */
     { OID("\x2b\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01"
           "\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01"
           "\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01"

tests/unit/unit2600.c

@@ -160,7 +160,7 @@ static CURLcode cf_test_adjust_pollset(struct Curl_cfilter *cf,
                                        struct easy_pollset *ps)
 {
   struct cf_test_ctx *ctx = cf->ctx;
-  /* just for testing, give one socket with events back */
+  /* for testing, give one socket with events back */
   return Curl_pollset_set(data, ps, ctx->idx, TRUE, TRUE);
 }