Added support for default credentials.

- Tested with new tool (print_default_creds_token) on:
  - workstation for env var and well known place.
  - GCE for compute engine default creds.
- I'd prefer the grpc_default_credentials_create() API to remain
  synchronous even though there may be an async call for gce detection
  on which we block.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/core/httpcli/httpcli.c b/src/core/httpcli/httpcli.c
index d372e694e9..d2cf09a8df 100644
--- a/src/core/httpcli/httpcli.c
+++ b/src/core/httpcli/httpcli.c
@@ -216,6 +216,7 @@ static void on_resolved(void *arg, grpc_resolved_addresses *addresses) {
   gpr_log(GPR_DEBUG, "%s", __FUNCTION__);
   if (!addresses) {
     finish(req, 0);
+    return;
   }
   req->addresses = addresses;
   req->next_address = 0;