tidy-up: indent, whitespace, comment in sources

Cherry-picked from #14692
Closes #14995

lib/curl_config.h.cmake

@@ -21,7 +21,6 @@
  * SPDX-License-Identifier: curl
  *
  ***************************************************************************/
-/* lib/curl_config.h.in. Generated somehow by cmake.  */
 
 /* Location of default ca bundle */
 #cmakedefine CURL_CA_BUNDLE "${CURL_CA_BUNDLE}"

lib/curlx.h

@@ -66,13 +66,4 @@
 #include "version_win32.h"
 /* "version_win32.h" provides curlx_verify_windows_version() */
 
-/* Now setup curlx_ * names for the functions that are to become curlx_ and
-   be removed from a future libcurl official API:
-   curlx_getenv
-   curlx_mprintf (and its variations)
-   curlx_strcasecompare
-   curlx_strncasecompare
-
-*/
-
 #endif /* HEADER_CURL_CURLX_H */

lib/vquic/curl_msh3.c

@@ -71,7 +71,7 @@
   pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); \
   pthread_mutex_init(lock, &attr); \
   pthread_mutexattr_destroy(&attr); \
-}while(0)
+} while(0)
 #define msh3_lock_uninitialize(lock) pthread_mutex_destroy(lock)
 #define msh3_lock_acquire(lock) pthread_mutex_lock(lock)
 #define msh3_lock_release(lock) pthread_mutex_unlock(lock)

m4/curl-override.m4

@@ -48,7 +48,7 @@ dnl a c89 compiler and does not support K&R.
 
 m4_define([AC_LANG_PROGRAM(C)],
 [$1
-int main (void)
+int main(void)
 {
 $2
  ;

tests/sshserver.pl

@@ -1121,6 +1121,7 @@ if($error) {
     exit 1;
 }
 
+
 #***************************************************************************
 # Initialize client sftp config with options actually supported.
 #