Fix thumbnail render getting stuck if no profile selected

Author: huntfx

mousetracks2/gui/main_window.py

@@ -1313,15 +1313,15 @@ def _request_thumbnail(self) -> bool:
             self._thumbnail_redraw_required = True
             return True
 
-        # Flag if drawing to prevent building up duplicate commands
-        self.pause_redraw += 1
-
         width = self.ui.thumbnail.width()
         height = self.ui.thumbnail.height()
         sanitised_profile_name, profile_name = self._selected_profile_data()
         if sanitised_profile_name is None:
             return False
 
+        # Flag if drawing to prevent building up duplicate commands
+        self.pause_redraw += 1
+
         # Account for collapsed splitters
         if not self.ui.horizontal_splitter.sizes()[1] and self.ui.horizontal_splitter.is_handle_visible():
             width += self.ui.horizontal_splitter.handleWidth()