Replaced the EXCEPT_GUARD macro for converting love exceptions into Lua errors with the new luax_catchexcept function, which takes lambda function arguments.

src/modules/image/wrap_ImageData.cpp

@@ -62,7 +62,7 @@ int w_ImageData_getPixel(lua_State *L)
 	int y = luaL_checkint(L, 3);
 	pixel c;
 
-	EXCEPT_GUARD(c = t->getPixel(x, y);)
+	luax_catchexcept(L, [&](){ c = t->getPixel(x, y); });
 
 	lua_pushnumber(L, c.r);
 	lua_pushnumber(L, c.g);
@@ -98,7 +98,7 @@ int w_ImageData_setPixel(lua_State *L)
 		c.a = (unsigned char)luaL_optinteger(L, 7, 255);
 	}
 
-	EXCEPT_GUARD(t->setPixel(x, y, c);)
+	luax_catchexcept(L, [&](){ t->setPixel(x, y, c); });
 	return 0;
 }
 
@@ -261,7 +261,7 @@ int w_ImageData_encode(lua_State *L)
 			return luaL_error(L, "Invalid image format '%s'.", fmt);
 	}
 
-	EXCEPT_GUARD(t->encode(file, format);)
+	luax_catchexcept(L, [&](){ t->encode(file, format); });
 	return 0;
 }