Simplified some batch code, resolved comments
diff --git a/src/objective-c/GRPCClient/private/NSError+GRPC.h b/src/objective-c/GRPCClient/private/NSError+GRPC.h
index aa032a4..af1f3ae 100644
--- a/src/objective-c/GRPCClient/private/NSError+GRPC.h
+++ b/src/objective-c/GRPCClient/private/NSError+GRPC.h
@@ -62,7 +62,7 @@
 typedef struct grpc_status {
     grpc_status_code status;
     const char *details;
-    grpc_metadata_array *metadata;
+    grpc_metadata_array metadata;
 } grpc_status;
 
 @interface NSError (GRPC)