[CRIU] [PATCH 2/3] util: Make sure open successed

[Cyrill Gorcunov]

Opening /dev/null may fail, check for ret code.

CID 1168167

Signed-off-by: Cyrill Gorcunov <gorcunov at openvz.org>
---
 util.c | 4 ++++
 1 file changed, 4 insertions(+)

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