remove debug mem write when in release mode
diff --git a/tinyxml2.h b/tinyxml2.h
index e1c22c5..975ab8c 100644
--- a/tinyxml2.h
+++ b/tinyxml2.h
@@ -282,7 +282,9 @@
 		if ( !mem ) return;

 		--currentAllocs;

 		Chunk* chunk = (Chunk*)mem;

+#ifdef DEBUG

 		memset( chunk, 0xfe, sizeof(Chunk) );

+#endif

 		chunk->next = root;

 		root = chunk;

 	}