Fix broken IrrDriver::cancelResChange

src/graphics/irr_driver.cpp

@@ -1171,7 +1171,7 @@ void IrrDriver::cancelResChange()
     // is actually called from the gui, i.e. the event loop, i.e. while the
     // old device is active - so we can't delete this device (which we must
     // do in applyResolutionSettings)
-    m_resolution_changing=RES_CHANGE_SAME;
+    m_resolution_changing=RES_CHANGE_CANCEL;
 
 }   // cancelResChange
 

src/graphics/irr_driver.hpp

@@ -114,7 +114,7 @@ private:
      *  the confirmation dialog needs an additional warning message.
      *  Same indicates a change of the resolution (back to the original
      *  one), but no confirmation dialog. */
-    enum {RES_CHANGE_NONE, RES_CHANGE_YES,
+    enum {RES_CHANGE_NONE, RES_CHANGE_YES, RES_CHANGE_CANCEL,
           RES_CHANGE_SAME, RES_CHANGE_YES_WARN} m_resolution_changing;