KV Cache defrag hash overflow - TMP Fix by @slaren

#6685

llama.cpp

@@ -10702,7 +10702,7 @@ static void llama_kv_cache_defrag_internal(struct llama_context & lctx) {
     // each move requires 6*n_layer tensors (see build_defrag)
     //   - source view, destination view, copy operation
     //   - x2 for keys and values
-    const uint32_t max_moves = LLAMA_MAX_NODES/(6*n_layer);
+    const uint32_t max_moves = (LLAMA_MAX_NODES - 2*n_layer)/(6*n_layer);
 
     // determine which KV cells to move where
     //