Fix racecondition triggered KeyError in our DebugThread.
Fix racecondition triggered KeyError in our DebugThread.

bencevans/mopidy,pacificIT/mopidy,diandiankan/mopidy,kingosticks/mopidy,diandiankan/mopidy,dbrgn/mopidy,quartz55/mopidy,jcass77/mopidy,diandiankan/mopidy,hkariti/mopidy,tkem/mopidy,rawdlite/mopidy,ZenithDK/mopidy,glogiotatidis/mopidy,SuperStarPL/mopidy,rawdlite/mopidy,tkem/mopidy,ZenithDK/mopidy,SuperStarPL/mopidy,mokieyue/mopidy,glogiotatidis/mopidy,rawdlite/mopidy,priestd09/mopidy,ZenithDK/mopidy,adamcik/mopidy,adamcik/mopidy,vrs01/mopidy,jmarsik/mopidy,bencevans/mopidy,woutervanwijk/mopidy,mopidy/mopidy,liamw9534/mopidy,diandiankan/mopidy,abarisain/mopidy,glogiotatidis/mopidy,hkariti/mopidy,jmarsik/mopidy,ali/mopidy,SuperStarPL/mopidy,bacontext/mopidy,mopidy/mopidy,woutervanwijk/mopidy,liamw9534/mopidy,adamcik/mopidy,hkariti/mopidy,tkem/mopidy,ali/mopidy,jmarsik/mopidy,SuperStarPL/mopidy,bacontext/mopidy,vrs01/mopidy,mokieyue/mopidy,abarisain/mopidy,jcass77/mopidy,swak/mopidy,quartz55/mopidy,dbrgn/mopidy,swak/mopidy,bencevans/mopidy,jodal/mopidy,dbrgn/mopidy,kingosticks/mopidy,vrs01/mopidy,ali/mopidy,tkem/mopidy,pacificIT/mopidy,jodal/mopidy,quartz55/mopidy,dbrgn/mopidy,priestd09/mopidy,priestd09/mopidy,ZenithDK/mopidy,quartz55/mopidy,mokieyue/mopidy,bacontext/mopidy,jcass77/mopidy,bacontext/mopidy,pacificIT/mopidy,vrs01/mopidy,rawdlite/mopidy,ali/mopidy,jodal/mopidy,pacificIT/mopidy,jmarsik/mopidy,glogiotatidis/mopidy,swak/mopidy,mopidy/mopidy,swak/mopidy,hkariti/mopidy,mokieyue/mopidy,kingosticks/mopidy,bencevans/mopidy