Let snapshot work with protocols
authoraliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162>
Fri, 12 Sep 2008 17:54:13 +0000 (17:54 +0000)
committeraliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162>
Fri, 12 Sep 2008 17:54:13 +0000 (17:54 +0000)
realpath will horribly mangle a protocol so avoid calling it if the backing
file is a protocol.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5200 c046a42c-6fe2-441c-8c8c-71466251a162


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