Merge "Camera: Resize the output slot vector when needed" into pi-dev

                    __FUNCTION__, gbp.get(), strerror(-res), res);

            return res;

        }

        if ((slot < 0) || (slot > BufferQueue::NUM_BUFFER_SLOTS)) {

            SP_LOGE("%s: Slot received %d either bigger than expected maximum %d or negative!",

                    __FUNCTION__, slot, BufferQueue::NUM_BUFFER_SLOTS);

            return BAD_VALUE;

        }

        //During buffer attach 'mMutex' is not held which makes the removal of

        //"gbp" possible. Check whether this is the case and continue.

        if (mOutputSlots[gbp] == nullptr) {

            continue;

        }

        auto& outputSlots = *mOutputSlots[gbp];

        if (static_cast<size_t> (slot + 1) > outputSlots.size()) {

            outputSlots.resize(slot + 1);

        }

        if (outputSlots[slot] != nullptr) {

            // If the buffer is attached to a slot which already contains a buffer,

            // the previous buffer will be removed from the output queue. Decrement