badwords: catch and fix threading-related words

Also:
- sync newlines between the two threaded examples.

Closes #20001

docs/examples/.gitignore

@@ -79,7 +79,6 @@ multi-legacy
 multi-post
 multi-single
 multi-uv
-multithread
 netrc
 parseurl
 persistent
@@ -123,6 +122,7 @@ smtp-tls
 smtp-vrfy
 sslbackend
 synctime
+threaded
 threaded-ssl
 unixsocket
 url2file

docs/examples/Makefile.inc

@@ -146,8 +146,8 @@ check_PROGRAMS = \
 COMPLICATED_MAY_BUILD = \
   cacertinmem.c \
   multi-uv.c \
-  multithread.c \
   sessioninfo.c \
+  threaded.c \
   threaded-ssl.c \
   usercertinmem.c
 

docs/examples/http2-upload.c

@@ -161,7 +161,7 @@ static int my_trace(CURL *curl, curl_infotype type,
     known_offset = 1;
   }
   secs = epoch_offset + tv.tv_sec;
-  now = localtime(&secs);  /* not thread safe but we do not care */
+  now = localtime(&secs);  /* not thread-safe but we do not care */
   snprintf(timebuf, sizeof(timebuf), "%02d:%02d:%02d.%06ld",
            now->tm_hour, now->tm_min, now->tm_sec, (long)tv.tv_usec);
 

docs/examples/smooth-gtk-thread.c

@@ -22,8 +22,8 @@
  *
  ***************************************************************************/
 /* <DESC>
- * A multi threaded application that uses a progress bar to show
- * status.  It uses Gtk+ to make a smooth pulse.
+ * A multi-threaded application that uses a progress bar to show
+ * status. It uses Gtk+ to make a smooth pulse.
  * </DESC>
  */
 /*

docs/examples/threaded-ssl.c

@@ -29,7 +29,7 @@
 /* A multi-threaded example that uses pthreads and fetches 4 remote files at
  * once over HTTPS.
  *
- * Recent versions of OpenSSL and GnuTLS are thread safe by design, assuming
+ * Recent versions of OpenSSL and GnuTLS are thread-safe by design, assuming
  * support for the underlying OS threading API is built-in. Older revisions
  * of this example demonstrated locking callbacks for the SSL library, which
  * are no longer necessary. An older revision with callbacks can be found at
@@ -40,7 +40,9 @@
 /* Also requires TLS support to run */
 
 #include <stdio.h>
+
 #include <pthread.h>
+
 #include <curl/curl.h>
 
 #define NUMT 4

docs/examples/threaded.c

@@ -107,6 +107,8 @@ int main(void)
     pthread_join(tid[i], NULL);
     fprintf(stderr, "Thread %d terminated\n", i);
   }
+
   curl_global_cleanup();
+
   return 0;
 }