Fix memory leak, fix error.c refcount reporting

src/core/lib/iomgr/error.c

@@ -174,8 +174,8 @@ static bool is_special(grpc_error *err) {
 grpc_error *grpc_error_ref(grpc_error *err, const char *file, int line,
                            const char *func) {
   if (is_special(err)) return err;
-  gpr_log(GPR_DEBUG, "%p: %d -> %d [%s:%d %s]", err, err->refs.count,
-          err->refs.count + 1, file, line, func);
+  gpr_log(GPR_DEBUG, "%p: %" PRIdPTR " -> %" PRIdPTR " [%s:%d %s]", err,
+          err->refs.count, err->refs.count + 1, file, line, func);
   gpr_ref(&err->refs);
   return err;
 }
@@ -200,8 +200,8 @@ static void error_destroy(grpc_error *err) {
 void grpc_error_unref(grpc_error *err, const char *file, int line,
                       const char *func) {
   if (is_special(err)) return;
-  gpr_log(GPR_DEBUG, "%p: %d -> %d [%s:%d %s]", err, err->refs.count,
-          err->refs.count - 1, file, line, func);
+  gpr_log(GPR_DEBUG, "%p: %" PRIdPTR " -> %" PRIdPTR " [%s:%d %s]", err,
+          err->refs.count, err->refs.count - 1, file, line, func);
   if (gpr_unref(&err->refs)) {
     error_destroy(err);
   }

src/core/lib/transport/transport.c

@@ -173,7 +173,7 @@ static void free_message(grpc_exec_ctx *exec_ctx, void *p, grpc_error *error) {
   close_message_data *cmd = p;
   GRPC_ERROR_UNREF(cmd->error);
   if (cmd->then_call != NULL) {
-    cmd->then_call->cb(exec_ctx, cmd->then_call->cb_arg, GRPC_ERROR_REF(error));
+    cmd->then_call->cb(exec_ctx, cmd->then_call->cb_arg, error);
   }
   gpr_free(cmd);
 }