cmocka: Silence clang analyzer warning
cmocka: Silence clang analyzer warning

It has no way to mark things as false postivies or teach it that things
abort.

Signed-off-by: Andreas Schneider <5be00ddc76278cf6077f5047ca3384a88460c671@cryptomilk.org>

clibs/cmocka,clibs/cmocka