Revert "Enables CloseSession() to be called from IApp_CloseSocket()"

This reverts commit accb5d54a98560da30e6a11b6e22f59f0ae112f5.

source/src/enet_encap/encap.c

@@ -622,8 +622,8 @@ void CloseSession(int socket) {
   int i;
   for (i = 0; i < OPENER_NUMBER_OF_SUPPORTED_SESSIONS; ++i) {
     if (g_registered_sessions[i] == socket) {
-      g_registered_sessions[i] = kEipInvalidSocket;
       IApp_CloseSocket_tcp(socket);
+      g_registered_sessions[i] = kEipInvalidSocket;
       break;
     }
   }