Update Parser/tokenizer/helpers.c

Co-authored-by: AN Long <aisk@users.noreply.github.com>

Author: AdamKorcz

Parser/tokenizer/helpers.c

@@ -494,9 +494,11 @@ valid_utf8(const unsigned char* s)
         return 0;
     }
     length = expected + 1;
-    for (int i = 1; i <= expected; i++)
-        if (s[i] < 0x80 || s[i] >= 0xC0)
+    for (int i = 1; i <= expected; i++) {
+        if (s[i] < 0x80 || s[i] >= 0xC0) {
             return 0;
+        }
+    }
     return length;
 }