[gdk-pixbuf] tests: Add test for bug 775648

[Bastien Nocera <hadess src gnome org>]

commit b1fbea9c0a725c701d01a7b1ae11b5f01898283c
Author: Bastien Nocera <hadess hadess net>
Date:   Tue Dec 13 18:48:39 2016 +0100

    tests: Add test for bug 775648
    
    https://bugzilla.gnome.org/show_bug.cgi?id=775648

 tests/test-images/randomly-modified/bug775648.qtif |  Bin 0 -> 138 bytes
 1 files changed, 0 insertions(+), 0 deletions(-)
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b/tests/test-images/randomly-modified/bug775648.qtif
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