nullPointerArithmeticRedundantCheck
ftp://ftp.de.debian.org/debian/pool/main/c/c-blosc2/c-blosc2_2.17.1+ds.orig.tar.xz
head c-blosc2-2.17.1/plugins/codecs/ndlz/xxhash.h:6163:79: warning: Either the condition 'secret!=NULL' is redundant or there is pointer arithmetic with NULL pointer. [nullPointerArithmeticRedundantCheck]