revert r5314 - if the banner plug-in shows IDD_VERIFY in its own thread and that thread sets it as the foreground window because of the WS_VISIBLE style, the main thread loses the ability to set the foreground window. this causes the installer window to start on the background if banner is used in .oninit.

git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@5915 212acab6-be3b-0410-9dea-997c60f758d6

Source/exehead/fileform.c

@@ -144,6 +144,7 @@ void handle_ver_dlg(BOOL kill)
         0,
         verProc
       );
+      ShowWindow(hwnd, SW_SHOW);
     }
   }
 }