[mapguide-trac] #291: Symbolization: Fix various problems in the stylization code

[MapGuide Open Source]

#291: Symbolization: Fix various problems in the stylization code
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 Reporter:  waltweltonlair  |         Owner:  waltweltonlair
     Type:  defect          |        Status:  assigned      
 Priority:  high            |     Milestone:  2.0           
Component:  Server          |       Version:                
 Severity:  major           |    Resolution:                
 Keywords:                  |   External_id:                
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Comment (by waltweltonlair):

 Fixed a couple of memory leaks in the stylization and rendering code:
  * SE_LineBuffer::Clone was overwriting a !LineBuffer pointer without
 first deleting it
  * The Renderer base class did not declare a virtual destructor.  Deleting
 a Renderer pointer (which now happens in many places in
 !MgServerRenderingService) would therefore not result in the destructors
 of the derived classes to be called, resulting in big leaks.  The Renderer
 class and all derived classes now have virtual destructors.

 http://trac.osgeo.org/mapguide/changeset/2408

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Ticket URL: <https://trac.osgeo.org/mapguide/ticket/291#comment:14>
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