xrGame: implement linux GetCurrentProcessId()

Author: eagleivg

src/xrGame/xrServer.cpp

@@ -829,8 +829,11 @@ void xrServer::Server_Client_Check(IClient* CL)
     {
         return;
     };
-#ifndef LINUX // FIXME!!!
+#ifdef LINUX // FIXME!!!
+    if (CL->process_id == getpid())
+#else
     if (CL->process_id == GetCurrentProcessId())
+#endif
     {
         CL->flags.bLocal = 1;
         SV_Client = (xrClientData*)CL;
@@ -840,7 +843,6 @@ void xrServer::Server_Client_Check(IClient* CL)
     {
         CL->flags.bLocal = 0;
     }
-#endif
 };
 
 bool xrServer::OnCL_QueryHost()
@@ -986,7 +988,9 @@ void xrServer::create_direct_client()
     SClientConnectData cl_data;
     cl_data.clientID.set(1);
     xr_strcpy(cl_data.name, "single_player");
-#ifndef LINUX // FIXME!!!
+#ifdef LINUX
+    cl_data.process_id = getpid();
+#else
     cl_data.process_id = GetCurrentProcessId();
 #endif
     new_client(&cl_data);