No error on T0 with single-extruder and fix MIXING_EXTRUDER virtual tools#12375

Merged

thinkyhead merged 2 commits intoMarlinFirmware:bugfix-2.0.xfrom

InsanityAutomation:SingleExtruderT0ErrorFix

Nov 9, 2018

Commits on Nov 9, 2018

Prevent error thrown by octoprint when calling T0 on connection with single extruder
InsanityAutomation
committed
Don't break MIXING_EXTRUDER in tool_change
thinkyhead
authored