Core/Game: Move singleton instances into compilation units

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

(cherry picked from commit 329225b40d110bed634f8cd0a1ab5c6dc7bbbdd1)

2 files changed, 7 insertions, 5 deletions

diff --git a/src/server/game/Events/GameEventMgr.cpp b/src/server/game/Events/GameEventMgr.cpp
index 79584c6261e..bb8e89d4829 100644
--- a/src/server/game/Events/GameEventMgr.cpp
+++ b/src/server/game/Events/GameEventMgr.cpp
@@ -29,6 +29,12 @@
 #include "UnitAI.h"
 #include "GameObjectAI.h"
 
+GameEventMgr* GameEventMgr::instance()
+{
+    static GameEventMgr instance;
+    return &instance;
+}
+
 bool GameEventMgr::CheckOneGameEvent(uint16 entry) const
 {
     switch (mGameEvent[entry].state)
diff --git a/src/server/game/Events/GameEventMgr.h b/src/server/game/Events/GameEventMgr.h
index b8d281dfdd7..d2982a402f2 100644
--- a/src/server/game/Events/GameEventMgr.h
+++ b/src/server/game/Events/GameEventMgr.h
@@ -100,11 +100,7 @@ class GameEventMgr
         ~GameEventMgr() { }
 
     public:
-        static GameEventMgr* instance()
-        {
-            static GameEventMgr instance;
-            return &instance;
-        }
+        static GameEventMgr* instance();
 
         typedef std::set<uint16> ActiveEvents;
         typedef std::vector<GameEventData> GameEventDataMap;