The SerialSimLink only has an _sl member if serial initalization was successfull. If we close a serial connection, check if we even have the _sl member. Otherwise move on silently. Change-Id: Ic3f3f5e50d780f424da7d0be5733d7167bb7159c
The SerialSimLink only has an _sl member if serial initalization was successfull. If we close a serial connection, check if we even have the _sl member. Otherwise move on silently. Change-Id: Ic3f3f5e50d780f424da7d0be5733d7167bb7159c