fix error: builtins.TypeError: object of type 'int' has no len()

buildbot_nix/__init__.py

@@ -846,10 +846,7 @@ def gerritReviewFmt(url, data):
 
     builderName = build['builder']['name']
 
-    if len(build['results']) != 1:
-        raise ValueError('this review request contains more than one build results, unexpected format request')
-
-    result = build['results'][0]
+    result = build['results']
     if result == util.RETRY:
         return dict()