Fix test for Windows

Windows filenames may very well contain a colon, so we adjust the test
accordingly.

Author: cmb69

ext/mysqli/tests/mysqli_debug_mysqlnd_control_string.phpt

@@ -89,7 +89,7 @@ if (!$IS_MYSQLND)
 	// F - file name
 	$trace = try_control_string($link, 't:O,' . $trace_file . ':F', $trace_file, 50);
 	// hopefully we'll never see a file name that's not covered by this regular expression...
-	if (!preg_match("@^\s*[/\w\\\\d\.\-]+\.[ch]@ismU", $trace))
+	if (!preg_match("@^\s*[/\w\\\\d\.:\-]+\.[ch]@ismU", $trace))
 		printf("[055] File names seem to be missing, first characters from trace are '%s'\n", substr($trace, 0, 80));
 
 	// -n - print function nesting depth