nullPointerArithmeticRedundantCheck
ftp://ftp.de.debian.org/debian/pool/main/h/hunt/hunt_1.5.orig.tar.gz
2.18.0 hunt-1.5/c/list.c:273:16: warning: Either the condition '!l->l_first' is redundant or there is pointer arithmetic with NULL pointer. [nullPointerArithmeticRedundantCheck]