Additional move of duplicated code.

Author: fredericDelaporte

src/NHibernate/Impl/AbstractSessionImpl.cs

@@ -407,6 +407,14 @@ protected internal void SetClosed()
 			closed = true;
 		}
 
+		protected DbConnection CloseConnectionManager()
+		{
+			if (!TransactionCoordinatorShared)
+				return ConnectionManager.Close();
+			ConnectionManager.RemoveDependentSession(this);
+			return null;
+		}
+
 		private void InitQuery(IQuery query, NamedQueryDefinition nqd)
 		{
 			query.SetCacheable(nqd.IsCacheable);

src/NHibernate/Impl/SessionImpl.cs

@@ -278,10 +278,7 @@ public DbConnection Close()
 
 				try
 				{
-					if (!TransactionCoordinatorShared)
-						return ConnectionManager.Close();
-					ConnectionManager.RemoveDependentSession(this);
-					return null;
+					return CloseConnectionManager();
 				}
 				finally
 				{

src/NHibernate/Impl/StatelessSessionImpl.cs

@@ -443,10 +443,7 @@ public void ManagedClose()
 				{
 					throw new SessionException("Session was already closed!");
 				}
-				if (TransactionCoordinatorShared)
-					ConnectionManager.RemoveDependentSession(this);
-				else
-					ConnectionManager.Close();
+				CloseConnectionManager();
 				SetClosed();
 			}
 		}