Security update for librsvg

This update librsvg to version 2.40.18 fixes the following issues:

Security issue fixed:
- CVE-2017-11464: A SIGFPE is raised in the function box_blur_line of rsvg-filter.c. (bsc#1049607)

This update was imported from the SUSE:SLE-12-SP2:Update update project.

Fixed bugs
bnc#1049607
VUL-0: CVE-2017-11464: librsvg: A SIGFPE is raised in the function box_blur_line of rsvg-filter.c in librsvg 2.40.17
Selected Binaries
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