fix init of static onelab server

Common/GmshMessage.cpp

@@ -47,6 +47,7 @@ std::string Msg::_commandLine;
 std::string Msg::_launchDate;
 GmshClient *Msg::_client = 0;
 onelab::client *Msg::_onelabClient = 0;
+onelab::server *onelab::server::_server = 0;
 
 #if defined(HAVE_NO_VSNPRINTF)
 static int vsnprintf(char *str, size_t size, const char *fmt, va_list ap)

Fltk/onelabWindow.cpp

@@ -28,8 +28,6 @@
 // interface. You'll need to reimplement this if you plan to build
 // a different ONELAB server.
 
-onelab::server *onelab::server::_server = 0;
-
 class onelabGmshServer : public GmshServer{
  private:
   onelab::localNetworkClient *_client;