Florian Müllner fce2930b85 dnd: Don't queue an idle handler if we already have one
Removing an existing source before scheduling a new one is not wrong,
but slightly less effective than doing nothing and relying on the
previously created source to do the job.

https://bugzilla.gnome.org/show_bug.cgi?id=711555
2013-11-06 18:36:42 +01:00
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