Remove an unfortunate optimisation from cvar_match_section

The (rather late) early-exit code, which provides a negligible
optimisation causes cvar_match_section to return false negatives when
it's called with a section name instead of a full variable name.

Remove this optimisation.

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>

src/config_file.c

@@ -130,7 +130,7 @@ static void cvar_list_free(cvar_t_list *list)
  */
 static int cvar_match_section(const char *local, const char *input)
 {
-	char *first_dot, *last_dot;
+	char *first_dot;
 	char *local_sp = strchr(local, ' ');
 	int comparison_len;
 
@@ -159,12 +159,8 @@ static int cvar_match_section(const char *local, const char *input)
 	 */
 
 	first_dot = strchr(input, '.');
-	last_dot = strrchr(input, '.');
 	comparison_len = strlen(local_sp + 2) - 1;
 
-	if (last_dot == first_dot || last_dot - first_dot - 1 != comparison_len)
-		return 0;
-
 	return !strncmp(local_sp + 2, first_dot + 1, comparison_len);
 }