Fix a traceback that occurred when Evince form field widgets lost focus
Fix a traceback that occurred when Evince form field widgets lost focus

GNOME/orca,pvagner/orca,GNOME/orca,GNOME/orca,chrys87/orca-beep,pvagner/orca,pvagner/orca,chrys87/orca-beep,chrys87/orca-beep,chrys87/orca-beep,GNOME/orca,pvagner/orca