am 5c6c5c7a: fix [3028370] GL get error should return a valid error if no context is bound.

Merge commit '5c6c5c7a43d44316395f5c35ab713372124b8b4c' into gingerbread-plus-aosp

* commit '5c6c5c7a43d44316395f5c35ab713372124b8b4c':
  fix [3028370] GL get error should return a valid error if no context is bound.