Changed the declaration of the variable to Marlin_main.cpp to fix issue on commit #965

Marlin/Marlin_main.cpp

@@ -276,6 +276,8 @@ int EtoPPressure=0;
   float delta_segments_per_second= DELTA_SEGMENTS_PER_SECOND;
 #endif					
 
+bool cancel_heatup = false ;
+
 //===========================================================================
 //=============================Private Variables=============================
 //===========================================================================

Marlin/ultralcd.cpp

@@ -19,8 +19,6 @@ int absPreheatHotendTemp;
 int absPreheatHPBTemp;
 int absPreheatFanSpeed;
 
-bool cancel_heatup = false ;
-
 #ifdef ULTIPANEL
 static float manual_feedrate[] = MANUAL_FEEDRATE;
 #endif // ULTIPANEL