[CRIU] [PATCH 2/5] pstree: Drop redundant nil test in prepare_pstree

[Cyrill Gorcunov]

This as well releases pb entry on error path, not
a big deal since we're exiting in case of error
but still.

Signed-off-by: Cyrill Gorcunov <gorcunov at openvz.org>
---
 pstree.c |   15 +++++++++------
 1 files changed, 9 insertions(+), 6 deletions(-)

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