fix: docker install

src/Lfg_Solo.cpp

@@ -21,7 +21,7 @@ public:
 
    // Docker Installation prevents warnings. In order to avoid the issue, we need to add __attribute__ ((unused)) 
    // to the player variable to tell the compiler it is fine not to use it.
-   void OnLogin(Player* __attribute__ ((unused))player)
+   void OnLogin(Player* player)
    {
 	   if (sConfigMgr->GetIntDefault("LFG.SoloMode", true))
         {