[Cel] #98: recast (celhpf) could build non multiple of 2 points paths but traverses it like so

#98: recast (celhpf) could build non multiple of 2 points paths but traverses it
like so
---------------------+------------------------------------------------------
 Reporter:  weltall  |        Type:  defect       
   Status:  new      |    Priority:  major        
Milestone:           |   Component:  other plugins
  Version:  2.0      |    Keywords:               
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 The path initialization in celHPath::Initialize takes for granted that a
 path will always be a multiple of 2 but it can happen this isn't the case
 and when it's not it will crash for a null pointer access. The attached
 patch can fix the issue but I consider myself it as an hack (even more as
 no one knows where is the mistake: should path points be in multiple of 2
 or not? for the first then the mistake lies in the building of the path,
 for the second the mistake lies in the initialization of the path)

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Ticket URL: <http://www.crystalspace3d.org/trac/cel/ticket/98>
Cel <http://www.crystalspace3d.org/>
Crystal Space - the free 3D engine
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