cont : fix unused

ggml-ci

Author: ggerganov

ggml/src/ggml-metal/ggml-metal.m

@@ -1078,6 +1078,8 @@ static bool ggml_backend_metal_buffer_rset_init(struct ggml_backend_metal_buffer
 
         return true;
     }
+#else
+    GGML_UNUSED(device);
 #endif
 
     ctx->rset = nil;
@@ -1095,6 +1097,8 @@ static void ggml_backend_metal_buffer_rset_free(struct ggml_backend_metal_buffer
             [ctx->rset release];
         }
     }
+#else
+    GGML_UNUSED(ctx);
 #endif
 }