[goffice] Add missing file

[Jean Bréfort <jbrefort src gnome org>]

commit 99858ca0b684ad9f24307a2989d391b49d63d024
Author: Jean Brefort <jean brefort normalesup org>
Date:   Wed May 22 10:37:16 2013 +0200

    Add missing file

 goffice/utils/unknown_image.png |  Bin 0 -> 1599 bytes
 1 files changed, 0 insertions(+), 0 deletions(-)
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diff --git a/goffice/utils/unknown_image.png b/goffice/utils/unknown_image.png
new file mode 100644
index 0000000..4757c4a
Binary files /dev/null and b/goffice/utils/unknown_image.png differ