fix memory leak

src/gui/game/GameView.cpp

@@ -175,6 +175,7 @@ GameView::GameView():
 	isToolTipFadingIn(false),
 	isButtonTipFadingIn(false),
 	toolTipPosition(-1, -1),
+	saveSimulationButtonEnabled(false),
 	shiftBehaviour(false),
 	ctrlBehaviour(false),
 	altBehaviour(false),

src/simulation/Gravity.cpp

@@ -74,6 +74,7 @@ void Gravity::gravity_cleanup()
 	free(gravx);
 	free(gravp);
 	free(gravmask);
+	free(obmap);
 }
 
 void Gravity::gravity_update_async()