tidy-up: miscellaneous

- GHA/windows: drop redundant double-quotes.
- CMake/PickyWarnings: improve/shorten comment.
- INTERNALS: fix typo in LibreSSL release date.
- drop redundant parentheses from single variables and sole `#if`
  expressions.
- cf-ip-happy: fix missing space from error string.
- telnet: fix parentheses in commented PP code.
- lib1922: fix typo test output text.
- smbserver: unfold lines.
- smbserver: use f-string.
- smbserver: initialize binary string as b``.
- fix typos in comments.

Closes #21972

.github/workflows/windows.yml

@@ -735,7 +735,7 @@ jobs:
         if: ${{ matrix.tflags != 'skipall' && matrix.tflags != 'skiprun' }}
         timeout-minutes: 2
         run: |
-          if "bld/src/curl.exe" --disable -V 2>/dev/null | grep smb; then
+          if bld/src/curl.exe --disable -V 2>/dev/null | grep smb; then
             python3 -m pip --disable-pip-version-check --no-input --no-cache-dir install --progress-bar off --prefer-binary -r tests/requirements.txt
           fi