[gstwidget] Clear button does not reset text fields
@jeff
Submitted by Jeff F.T. Assigned to Jeff F.T. @jeff
Description
If I click the reset/clear button in the advanced codec properties, text fields such as the "Statistics Filename" (in the case of the xvid codec) are not reset to their default value (such as "xvid-stats.log").
Imported from https://bugzilla.gnome.org/show_bug.cgi?id=657393