Merge pull request #3682 from buildkite/fix/nil-response-metadata-get

Author: moskyb

clicommand/meta_data_get.go

@@ -98,7 +98,7 @@ var MetaDataGetCommand = cli.Command{
 			//
 			// We also use `IsSet` instead of `cfg.Default != ""`
 			// to allow people to use a default of a blank string.
-			if resp.StatusCode == 404 && c.IsSet("default") {
+			if resp != nil && resp.StatusCode == 404 && c.IsSet("default") {
 				l.Warn(
 					"No meta-data value exists with key %q, returning the supplied default %q",
 					cfg.Key,