Qt: impr_item::mouseDoubleClickEvent() hud_message_box leak
Qt-client impr_item::mouseDoubleClickEvent() allocates hud_message_box, but might error out before doing anything with it.
Pushed to branches other than S3_0, which is in semi-freeze. Will push there after 3.0.8 release.
Qt-client impr_item::mouseDoubleClickEvent() allocates hud_message_box, but might error out before doing anything with it.