Fix the 'InputAggregator' to un-press a key even if no semantic value
Fix the 'InputAggregator' to un-press a key even if no semantic value

OpenTechEngine/CEGUI,ruleless/CEGUI,OpenTechEngine/CEGUI,ruleless/CEGUI,OpenTechEngine/CEGUI,ruleless/CEGUI,ruleless/CEGUI,OpenTechEngine/CEGUI