Fix mixed indentation

The editors I use replace tabs with spaces, so I never really thought about mixed indentation happening. Whoops.

desktop_version/src/Graphics.h

@@ -287,7 +287,7 @@ public:
 
 	std::map<int, int> font_positions;
 
-    SDL_Surface* ghostbuffer;
+	SDL_Surface* ghostbuffer;
 };
 
 extern Graphics graphics;

desktop_version/src/Script.cpp

@@ -3151,7 +3151,7 @@ void scriptclass::startgamemode( int t )
 		game.customstart();
 		game.jumpheld = true;
 
-        ed.ghosts.clear();
+		ed.ghosts.clear();
 
 		map.custommode = true;
 		map.customx = 100;