musa: fix build warning (unused variable) (#14231)

Signed-off-by: Xiaodong Ye <xiaodong.ye@mthreads.com>

ggml/src/ggml-cuda/ggml-cuda.cu

@@ -2664,7 +2664,9 @@ static void evaluate_and_capture_cuda_graph(ggml_backend_cuda_context * cuda_ctx
                                ggml_backend_buft_is_cuda_split(node->src[j]->buffer->buft) || (integrated && ggml_backend_buft_is_cuda_host(node->src[j]->buffer->buft)));
                     }
                 }
-#endif
+#else
+                GGML_UNUSED(integrated);
+#endif // NDEBUG
 
                 bool ok = ggml_cuda_compute_forward(*cuda_ctx, node);
                 if (!ok) {