size_prepared_cb will always fail with WMF files
Submitted by Ariel Zelivansky
Link to original bug (#778241)
Description
On gdk-pixbuf-thumbnailer.c:43 (size_prepared_cb) there is the following assertion: g_return_if_fail (width > 0 && height > 0)
But with WMF files, io-wmf.c (from libwmf) will always call the size callback function with a height and width of -1 and not with the actual dimensions of the image.
The function then fails and an error is printed ("CRITICAL **: size_prepared_cb: assertion 'width > 0 && height > 0' failed").
Version: git master
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