Core/Game: Move singleton instances into compilation units

* Fixes issues when building shared libraries
  (prevents gcc and clang from providing several instance)

1 files changed, 6 insertions, 0 deletions

diff --git a/src/server/game/Server/BattlenetServerManager.cpp b/src/server/game/Server/BattlenetServerManager.cpp
index 5da0d81161a..1256943e565 100644
--- a/src/server/game/Server/BattlenetServerManager.cpp
+++ b/src/server/game/Server/BattlenetServerManager.cpp
@@ -35,6 +35,12 @@ void IPC::BattlenetComm::ServerManager::CloseConnection()
     _socket = nullptr;
 }
 
+IPC::BattlenetComm::ServerManager& IPC::BattlenetComm::ServerManager::Instance()
+{
+    static ServerManager instance;
+    return instance;
+}
+
 IPC::BattlenetComm::Header IPC::BattlenetComm::ServerManager::CreateHeader(BnetCommands command)
 {
     Header header;