Correct way to find the region

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@33389 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

wxPython/wx/lib/ogl/_lines.py

@@ -1511,12 +1511,7 @@ class LineShape(Shape):
         labelShape._shapeRegion.SetSize(labelShape.GetWidth(), labelShape.GetHeight())
 
         # Find position in line's region list
-        i = 0
-        for region in self.GetRegions():
-            if labelShape._shapeRegion == region:
-                self.GetRegions().remove(region)
-            else:
-                i += 1
+        i = self._regions.index(labelShape._shapeRegion)
                 
         xx, yy = self.GetLabelPosition(i)
         # Set the region's offset, relative to the default position for