[OpenLayers-Trac] [OpenLayers] #746: add() function should be tolerant to omitted y value

[OpenLayers]

#746: add() function should be tolerant to omitted y value
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 Reporter:  euzuro   |       Owner:             
     Type:  feature  |      Status:  new        
 Priority:  minor    |   Milestone:  2.5 Release
Component:  general  |     Version:  2.4        
 Keywords:           |  
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 in the add(x,y) functions on Pixel, LonLat, and Bounds,
 if user does not pass a y value, it causes errors.

 Obviously, good form would dictate passing both, but
 out of kindness we ought to be nice and assume "0" if
 nothing is passed.

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Ticket URL: <http://trac.openlayers.org/ticket/746>
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