fix: 修正3个潜在的编译警告, 关于lua函数注册表的

components/cc/luat_lib_cc.c

@@ -379,8 +379,8 @@ static const rotable_Reg_t reg_cc[] =
     { "lastNum" ,   ROREG_FUNC(l_cc_get_last_call_num)},
 	{ "quality" ,   ROREG_FUNC(l_cc_get_quality)},
     { "on" ,        ROREG_FUNC(l_cc_on)},
-    { "record", ROREG_FUNC(l_cc_record_call)},
-	{ NULL,          {}}
+    { "record", 	ROREG_FUNC(l_cc_record_call)},
+	{ NULL,         ROREG_INT(0)}
 };
 
 LUAMOD_API int luaopen_cc( lua_State *L ) {

components/io_queue/luat_lib_io_queue.c

@@ -372,7 +372,7 @@ static const rotable_Reg_t reg_io_queue[] =
 	{ "get",         ROREG_FUNC(l_io_queue_get)},
 	{ "release",     ROREG_FUNC(l_io_queue_release)},
 	{ "exti",        ROREG_FUNC(l_io_queue_exti)},
-	{ NULL,          {}}
+	{ NULL,          ROREG_INT(0)}
 };
 
 LUAMOD_API int luaopen_io_queue( lua_State *L ) {

components/luf/luat_lib_luf.c

@@ -89,7 +89,7 @@ static const rotable_Reg_t reg_luf[] =
     { "dump" ,        ROREG_FUNC(l_luf_dump)},
     { "undump" ,      ROREG_FUNC(l_luf_undump)},
     { "cmp",          ROREG_FUNC(l_luf_cmp)},
-	  { NULL,           {}}
+	  { NULL,           ROREG_INT(0)}
 };
 
 LUAMOD_API int luaopen_luf( lua_State *L ) {