Fix javascript platform build

platform/javascript/os_javascript.cpp

@@ -980,7 +980,7 @@ Error OS_JavaScript::initialize(const VideoMode &p_desired, int p_video_driver,
 	EMSCRIPTEN_RESULT result;
 #define EM_CHECK(ev)                         \
 	if (result != EMSCRIPTEN_RESULT_SUCCESS) \
-	ERR_PRINT("Error while setting " #ev " callback: Code " + itos(result))
+		ERR_PRINT("Error while setting " #ev " callback: Code " + itos(result));
 #define SET_EM_CALLBACK(target, ev, cb)                               \
 	result = emscripten_set_##ev##_callback(target, NULL, true, &cb); \
 	EM_CHECK(ev)