HOPKINS: Hide cursor during cutscenes

This hopefully fixes the regression that was recently introduced
where the cursor would be visible, but black, during cutscenes.
This was presumably because the color black in a mouse cursor no
longer necessarily means that it's transparent.

engines/hopkins/anim.cpp

@@ -53,6 +53,8 @@ void AnimationManager::playAnim(const Common::String &filename, uint32 rate1, ui
 	if (_vm->shouldQuit())
 		return;
 
+	_vm->_eventsManager.mouseOff();
+
 	bool hasScreenCopy = false;
 	byte *screenP = _vm->_graphicsManager._vesaScreen;
 
@@ -210,6 +212,8 @@ void AnimationManager::playAnim(const Common::String &filename, uint32 rate1, ui
 	_vm->_graphicsManager.FADE_LINUX = 0;
 	f.close();
 	_vm->_graphicsManager._skipVideoLockFl = false;
+
+	_vm->_eventsManager.mouseOn();
 }
 
 /**
@@ -224,6 +228,8 @@ void AnimationManager::playAnim2(const Common::String &filename, uint32 rate1, u
 	if (_vm->shouldQuit())
 		return;
 
+	_vm->_eventsManager.mouseOff();
+
 	bool hasScreenCopy = false;
 	while (!_vm->shouldQuit()) {
 		memcpy(_vm->_graphicsManager._oldPalette, _vm->_graphicsManager._palette, 769);
@@ -394,6 +400,8 @@ void AnimationManager::playAnim2(const Common::String &filename, uint32 rate1, u
 	_vm->_graphicsManager.unlockScreen();
 	_vm->_graphicsManager.fadeInShort();
 	_vm->_graphicsManager.DD_VBL();
+
+	_vm->_eventsManager.mouseOn();
 }
 
 /**