[OpenLayers-Trac] [OpenLayers] #440: stopObserving fails when called with null element

[OpenLayers]

#440: stopObserving fails when called with null element
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  Reporter:  crschmidt  |       Owner:             
      Type:  feature    |      Status:  new        
  Priority:  minor      |   Milestone:  2.5 Release
 Component:  general    |     Version:  2.2        
Resolution:             |    Keywords:             
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Changes (by sderle):

  * milestone:  => 2.5 Release

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Ticket URL: <http://trac.openlayers.org/ticket/440#comment:2>
OpenLayers <http://openlayers.org/>
A free AJAX map viewer