Removed unnecessary tabs in empty lines, fixed texture filtering when the minification and mipmap filter are the same

src/modules/graphics/opengl/wrap_Graphics.cpp

@@ -601,10 +601,10 @@ int w_setDefaultImageFilter(lua_State *L)
 {
 	Image::FilterMode min;
 	Image::FilterMode mag;
-	
+
 	const char *minstr = luaL_checkstring(L, 1);
 	const char *magstr = luaL_optstring(L, 2, minstr);
-	
+
 	if (!Image::getConstant(minstr, min))
 		return luaL_error(L, "Invalid filter mode: %s", minstr);
 	if (!Image::getConstant(magstr, mag))
@@ -613,7 +613,7 @@ int w_setDefaultImageFilter(lua_State *L)
 	Image::Filter f;
 	f.min = min;
 	f.mag = mag;
-	
+
 	instance->setDefaultImageFilter(f);
 
 	return 0;