Remove multiple calls to recordLeakNonRefCountingOperation() in AdvancedLeakAwareByteBuf.forEachByteDesc

Motivation:

AdvancedLeakAwareByteBuf.forEachByteDesc(...) called recordLeakNonRefCountingOperation() two times which resulted in incorrect leak detection reports.

Modifications:

Remove duplicated call to recordLeakNonRefCountingOperation()

Result:

Correct leak detection results

Author: normanmaurer

buffer/src/main/java/io/netty/buffer/AdvancedLeakAwareByteBuf.java

@@ -635,7 +635,6 @@ public int forEachByte(int index, int length, ByteProcessor processor) {
 
     @Override
     public int forEachByteDesc(ByteProcessor processor) {
-                recordLeakNonRefCountingOperation();
         recordLeakNonRefCountingOperation();
         return super.forEachByteDesc(processor);
     }