maint: space changes

* configure.ac, src/complain.c: space changes.

configure.ac

@@ -73,6 +73,7 @@ if test "$enable_gcc_warnings" = yes; then
   warn_c='-Wbad-function-cast -Wmissing-declarations -Wmissing-prototypes
     -Wshadow -Wstrict-prototypes'
   warn_cxx='-Wnoexcept'
+
   AC_LANG_PUSH([C])
   for i in $warn_common $warn_c;
   do

src/complain.c

@@ -74,7 +74,8 @@ error_message (location *loc,
   vfprintf (stderr, message, args);
   {
     size_t l = strlen (message);
-    if (l < 2 || message[l-2] != ':' || message[l-1] != ' ') {
+    if (l < 2 || message[l-2] != ':' || message[l-1] != ' ')
+      {
         putc ('\n', stderr);
         fflush (stderr);
       }