vogl_replay_tool: return NULL instead of false
vogl_replay_tool: return NULL instead of false

bclemetsonblizzard/vogl,ValveSoftware/vogl,kingtaurus/vogl,kingtaurus/vogl,kingtaurus/vogl,bclemetsonblizzard/vogl,ValveSoftware/vogl,ValveSoftware/vogl,bclemetsonblizzard/vogl,ValveSoftware/vogl,bclemetsonblizzard/vogl,kingtaurus/vogl,bclemetsonblizzard/vogl