Amend the missing emit statements for two signal handlings
Amend the missing emit statements for two signal handlings

Change-Id: Iea91994d34455eeca9e4290740d2419f2091d03e
Reviewed-by: Denis Shienkov <6a9c747bd2ba446682324cf340d3b86f30cf4d55@gmail.com>

kobolabs/qtserialport,RoadWorksSoftware/QtSerialPort-OS2,kobolabs/qtserialport,RoadWorksSoftware/QtSerialPort-OS2