Block test client until ready on Windows.

Author: Carifio24

glue_wwt/viewer/tests/test_wwt_widget.py

@@ -22,7 +22,7 @@ class WWTQtViewerBlocking(WWTQtViewer):
 
     def _initialize_wwt(self):
         from pywwt.qt import WWTQtClient
-        self._wwt = WWTQtClient(block_until_ready=sys.platform != 'win32')
+        self._wwt = WWTQtClient(block_until_ready=True)
 
 
 class TestWWTDataViewer(object):