[Bugs] #4093 Write HIGH: Write: export to PDF crash the activity

[Sugar Labs Bugs]

#4093: Write: export to PDF crash the activity
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    Reporter:  godiard      |          Owner:  godiard    
        Type:  defect       |         Status:  new        
    Priority:  High         |      Milestone:  0.98       
   Component:  Write        |        Version:  Unspecified
    Severity:  Critical     |       Keywords:  regression 
Distribution:  Unspecified  |   Status_field:  Assigned   
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Comment(by garnacho):

 apparently the pdf export creates an extra widgetless view, this patch
 should let handles cope with that

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Ticket URL: <http://bugs.sugarlabs.org/ticket/4093#comment:5>
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