//如果不出错，则保留返回值在堆栈上，返回 true
//如果出错，压入调用堆栈信息，返回 false
public bool PCall(int nArgs, int nResults)
{
/*
* int oldTop = LuaDLL.lua_gettop(L) - nArgs - 1;
* LuaDLL.lua_rawgeti(L, LuaIndexes.LUA_REGISTRYINDEX, errorFuncRef);
* LuaDLL.lua_insert(L, oldTop + 1);
* if (LuaDLL.lua_pcall(L, nArgs, nResults, oldTop + 1) == 0)
* {
* LuaDLL.lua_remove(L, oldTop + 1); //pop errorFunc
* return true;
* }
* else
* {
* LuaDLL.lua_remove(L, oldTop + 1); //pop errorFunc
* return false;
* }
*/
return(LuaDLL.HOBA_Unity_Lua_PCall(L, nArgs, nResults, LuaIndexes.LUA_REGISTRYINDEX, errorFuncRef));
}