[gdk-pixbuf] tests: Add test for bug 779016

[Bastien Nocera <hadess src gnome org>]

commit 4cc39d479356b6b09e3d62a0f3ab424db6c266d8
Author: Bastien Nocera <hadess hadess net>
Date:   Tue Dec 5 11:55:17 2017 +0100

    tests: Add test for bug 779016
    
    https://bugzilla.gnome.org/show_bug.cgi?id=779016

 tests/test-images/fail/bug779016-infinite.icns |  Bin 0 -> 32 bytes
 1 files changed, 0 insertions(+), 0 deletions(-)
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diff --git a/tests/test-images/fail/bug779016-infinite.icns b/tests/test-images/fail/bug779016-infinite.icns
new file mode 100644
index 0000000..29bc169
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