fix typo

Author: Charlie Gordon

libqhtml/cssparse.c

@@ -298,7 +298,7 @@ CSSProperty *css_parse_properties(CSSParseState *b, const char *props_str)
                 !(type & (CSS_TYPE_FOUR|CSS_TYPE_ARGS)))
                 break;
             if (nb_args >= 4 &&
-                (!type & CSS_TYPE_ARGS))
+                !(type & CSS_TYPE_ARGS))
                 break;
             if (nb_args >= MAX_ARGS)
                 break;