CLuaInstVideo::VideoCheckData(): Fix segfault when invalid parameter is passed

Origin commit data
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Branch: ni/coolstream
Commit: ec2afe52a9
Author: Michael Liebmann <tuxcode.bbg@gmail.com>
Date: 2016-04-30 (Sat, 30 Apr 2016)


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This commit was generated by Migit
This commit is contained in:
Michael Liebmann
2016-04-30 19:01:30 +02:00
parent 1aeb0913db
commit 0ced5cbc38

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@@ -48,7 +48,11 @@ CLuaInstVideo* CLuaInstVideo::getInstance()
CLuaVideo *CLuaInstVideo::VideoCheckData(lua_State *L, int n)
{
return *(CLuaVideo **) luaL_checkudata(L, n, LUA_VIDEO_CLASSNAME);
void* ret = luaL_testudata(L, n, LUA_VIDEO_CLASSNAME);
if (ret == NULL)
return NULL;
else
return *(CLuaVideo **) ret;
}
void CLuaInstVideo::LuaVideoRegister(lua_State *L)