Merge "Fixed a buffer overflow bug in DrmPassthruPlugin"

     * memory has to be allocated by the caller.

     */

    if (NULL != (*decBuffer) && 0 < (*decBuffer)->length) {

        if ((*decBuffer)->length >= encBuffer->length) {

            memcpy((*decBuffer)->data, encBuffer->data, encBuffer->length);

            (*decBuffer)->length = encBuffer->length;

        } else {

            ALOGE("decBuffer size (%d) too small to hold %d bytes",

                (*decBuffer)->length, encBuffer->length);

            return DRM_ERROR_UNKNOWN;

        }

    }

    return DRM_NO_ERROR;

}