LU-1884 build: fix 'resource leak' errors

LU-1884 build: fix 'resource leak' errors

Fix 'resource leak' defects found by Coverity version 6.0.3:
Resource leak (RESOURCE_LEAK)
Variable going out of scope leaks the storage it points to.

Signed-off-by: Sebastien Buisson <sebastien.buisson@bull.net>
Change-Id: I6fe04d30c209d164ac8c741497c675a33ffcca6d
Reviewed-on: http://review.whamcloud.com/3934
Tested-by: Hudson
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: Keith Mannthey <keith@whamcloud.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>