[inspector] fixed suspended-generator-scopes.js with --aways-opt

BUG=v8:6171
TBR=dgozman@chromium.org

Review-Url: https://codereview.chromium.org/2785523004
Cr-Commit-Position: refs/heads/master@{#44245}

test/inspector/debugger/suspended-generator-scopes.js

@@ -14,6 +14,7 @@ function testSuspendedGenerator()
   g.next();
 
   debugger;
+  return g;
 }`);
 
 Protocol.Debugger.enable().then(testSuite);

test/inspector/inspector.status

@@ -25,7 +25,6 @@
   'cpu-profiler/console-profile-end-parameterless-crash': [SKIP],
   # Issue 6171. Timeout.
   'debugger/set-blackbox-patterns': [SKIP],
-  'debugger/suspended-generator-scopes': [SKIP],
 }],  # variant != default
 
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