[WIN32k]

- Chek if there is something to do in GDIOBJ_SetOwnership before doing it

svn path=/trunk/; revision=47788

reactos/subsystems/win32/win32k/objects/gdiobj.c

@@ -1412,6 +1412,19 @@ LockHandle:
                     PPROCESSINFO W32Process;
                     NTSTATUS Status;
 
+                    if (NewOwner != NULL)
+                    {
+                        ProcessId = PsGetProcessId(NewOwner);
+                    }
+                    else
+                        ProcessId = 0;
+
+                    if((ULONG_PTR)ProcessId == ((ULONG_PTR)PrevProcId & ~0x1))
+                    {
+                        DPRINT("Setting same process than previous one, nothing to do\n");
+                        goto done;
+                    }
+
                     /* dereference the process' object counter */
                     /* FIXME */
                     if ((ULONG_PTR)PrevProcId & ~0x1)
@@ -1430,8 +1443,6 @@ LockHandle:
 
                     if (NewOwner != NULL)
                     {
-                        ProcessId = PsGetProcessId(NewOwner);
-
                         /* Increase the new process' object counter */
                         W32Process = (PPROCESSINFO)NewOwner->Win32Process;
                         if (W32Process != NULL)
@@ -1439,9 +1450,8 @@ LockHandle:
                             InterlockedIncrement(&W32Process->GDIHandleCount);
                         }
                     }
-                    else
-                        ProcessId = 0;
 
+                done:
                     /* remove the process id lock and change it to the new process id */
                     (void)InterlockedExchangePointer((PVOID*)&Entry->ProcessId, ProcessId);