fix "not enough actual parameters for macro" warning

1 files changed, 1 insertions, 1 deletions

diff --git a/src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.cc b/src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.cc
index dca345566a..5a36acaa57 100644
--- a/src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.cc
+++ b/src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.cc
@@ -484,7 +484,7 @@ static void rr_connectivity_changed_locked(void* arg, grpc_error* error) {
       break;
     }
     case GRPC_CHANNEL_SHUTDOWN:
-      GPR_UNREACHABLE_CODE();
+      GPR_UNREACHABLE_CODE(return );
     case GRPC_CHANNEL_CONNECTING:
     case GRPC_CHANNEL_IDLE:;  // fallthrough
   }