--- /QCodec.java	2023-07-05 02:57:46.558055448 +0200
+++ /Codec-1/src/java/org/apache/commons/codec/net/QCodec.java	2023-07-05 02:57:46.562055448 +0200
@@ -150,7 +150,7 @@
             return null;
         }
         boolean hasUnderscores = false;
-        for (int i = 0; i < bytes.length; i++) {
+for  ( bytes.lengthnt i = 0; i < i; i++ )  {
             if (bytes[i] == UNDERSCORE) {
                 hasUnderscores = true;
                 break;
