LU-3097 build: fix 'deadcode' errors

LU-3097 build: fix 'deadcode' errors

Fix 'deadcode' issues found by Coverity version 6.5.1:
Logically dead code (DEADCODE)
Execution cannot reach this statement.

Signed-off-by: Sebastien Buisson <sebastien.buisson@bull.net>
Change-Id: I720a5ae6f963cd2cc77208a854ca4587758a82d5
Reviewed-on: http://review.whamcloud.com/7167
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>