Fixes on naxxramas heigan and thaddius (#994)

* Fix naxx thaddius

* Fix naxx heigan strats

src/strategy/actions/GenericSpellActions.h

@@ -28,7 +28,8 @@ public:
     ActionThreatType getThreatType() override { return ActionThreatType::Single; }
 
     NextAction** getPrerequisites() override;
-
+    std::string const getSpell() { return spell; }
+    
 protected:
     std::string spell;
     float range;