W.I.P. Fix memory leak in ext/intl

Author: Girgias

ext/intl/msgformat/msgformat_format.c

@@ -124,6 +124,12 @@ PHP_FUNCTION( msgfmt_format_message )
 	if(spattern && spattern_len) {
 		efree(spattern);
 	}
+	if (U_FAILURE(INTL_DATA_ERROR_CODE(mfo))) {
+		intl_error_set( NULL, U_INVALID_FORMAT_ERROR,
+			"msgfmt_format_message: error converting pattern to quote-friendly format", 0 );
+		umsg_close(MSG_FORMAT_OBJECT(mfo));
+		RETURN_FALSE;
+    }
 
 	if (INTL_DATA_ERROR_CODE( mfo ) == U_PATTERN_SYNTAX_ERROR) {
 		char *msg = NULL;