fix(helm): ignore short flag when sha is empty

Signed-off-by: Robert James Hernandez <rob@sarcasticadmin.com>

cmd/helm/version.go

@@ -144,7 +144,7 @@ func getK8sVersion() (*apiVersion.Info, error) {
 }
 
 func formatVersion(v *pb.Version, short bool) string {
-	if short {
+	if short && v.GitCommit != "" {
 		return fmt.Sprintf("%s+g%s", v.SemVer, v.GitCommit[:7])
 	}
 	return fmt.Sprintf("%#v", v)