snapshot: use perror() on failed library calls
authorBrian Norris <banorris@uci.edu>
Thu, 24 May 2012 17:57:20 +0000 (10:57 -0700)
committerBrian Norris <banorris@uci.edu>
Thu, 24 May 2012 17:57:20 +0000 (10:57 -0700)
commit451ad13b5c9ef4ddde399d05fef48181cbd51109
treebc186151fc2323382ee302261175074a2ef8772f
parentd212f6a2fcc841987daf7931aabbc7689320528f
snapshot: use perror() on failed library calls

This will print more informative messages when we fail.
snapshot.cc