Fix lb_policies_test

src/core/ext/lb_policy/round_robin/round_robin.c

@@ -458,7 +458,6 @@ static void rr_connectivity_changed(grpc_exec_ctx *exec_ctx, void *arg,
 
         unref = 1;
         if (p->num_subchannels == 0) {
-          GRPC_ERROR_REF(error);
           grpc_connectivity_state_set(
               exec_ctx, &p->state_tracker, GRPC_CHANNEL_FATAL_FAILURE,
               GRPC_ERROR_CREATE_REFERENCING("Round Robin Channels Exhausted",

src/core/lib/transport/transport.h

@@ -50,7 +50,7 @@ typedef struct grpc_transport grpc_transport;
    for a stream. */
 typedef struct grpc_stream grpc_stream;
 
-#define GRPC_STREAM_REFCOUNT_DEBUG
+//#define GRPC_STREAM_REFCOUNT_DEBUG
 
 typedef struct grpc_stream_refcount {
   gpr_refcount refs;