It looks like it was already reported upstream,
http://lists.cairographics.org/archives/cairo/2013-March/024155.html
and it has been fixed
http://cgit.freedesktop.org/cairo/commit/src/cairo-mempool.c?id=01a8bf01c6508a4fea8d40371c3049e7a2f7908a
so I gess now we just need to wait for the new version to be built
It looks like it was already reported upstream,
http:// lists.cairograp hics.org/ archives/ cairo/2013- March/024155. html
and it has been fixed
http:// cgit.freedeskto p.org/cairo/ commit/ src/cairo- mempool. c?id=01a8bf01c6 508a4fea8d40371 c3049e7a2f7908a
so I gess now we just need to wait for the new version to be built