bug#63255: Firefox crashes when triggering file dialog open

[Steven Roose]

Whenever I right click and "safe image as" or when I try to do a file 
upload, firefox segfaults.

This is an excerpt trying to save google's logo to disk:


** Gtk:ERROR:gtkiconhelper.c:494:ensure_surface_for_gicon: assertion 
failed (error == NULL): Failed to load 
/run/current-system/profile/share/icons/Adwaita/16x16/status/image-missing.png: 
Unrecognized image file format (gdk-pixbuf-error-quark, 3) Bail out! 
Gtk:ERROR:gtkiconhelper.c:494:ensure_surface_for_gicon: assertion failed 
(error == NULL): Failed to load 
/run/current-system/profile/share/icons/Adwaita/16x16/status/image-missing.png: 
Unrecognized image file format (gdk-pixbuf-error-quark, 3) Redirecting 
call to abort() to mozalloc_abort