Unwedge ACodec if allocating output buffers fails while reconfiguring.

                    mCodec->signalError(OMX_ErrorUndefined, err);

                    // This is technically not correct, since we were unable

                    // to allocate output buffers and therefore the output port

                    // remains disabled. It is necessary however to allow us

                    // to shutdown the codec properly.

                    mCodec->changeState(mCodec->mExecutingState);

                    // This is technically not correct, but appears to be

                    // the only way to free the component instance.

                    // Controlled transitioning from excecuting->idle

                    // and idle->loaded seem impossible probably because

                    // the output port never finishes re-enabling.

                    mCodec->mShutdownInProgress = true;

                    mCodec->mKeepComponentAllocated = false;

                    mCodec->changeState(mCodec->mLoadedState);

                }

                return true;