Object Viewer code fix: _rebuildObjTabBar_inProgress not maintained properly
Bug Number: n/a
Release notes (y/n): no
For Release Nums: 7.1.2

This coding error was confirmed to be academic, as redundant processing was 
being done for a related event.  The intention was for the OpenObjectDlg::
rebuildObjTabBar() to set the following flag at the beginning of its 
processing, and clear it when done:

   _rebuildObjTabBar_inProgress = true;
   ... ... ...
   _rebuildObjTabBar_inProgress = false;

HOWEVER both statements were setting the flag to 'true'.

This flag is used only in the OpenObjectDlg::objTabBar_currentChanged (int 
newInx) Qt signal handler.  The effect of this coding error was to have that 
method always skip processing.  However, the necessary processing is also 
being done in the  OpenObjectDlg::objTabBar_tabBarLeftClicked (int refInx) 
Qt signal handler, which, in practice, is always called in conjunction with 
the first.  I did confirm that the redundant processing is not a problem -- 
no significant processing is done if the proper SimObj has already been 
installed as a tab in the Object Viewer dialog.

---