PSS llvm: don't crash on memset
PSS llvm: don't crash on memset

if it is not constant 0 memset than we don't care...
FIXME: handle 0 memset ;)

Signed-off-by: Marek Chalupa <a05df156a69ad59faa9af9b666ef78009594c145@gmail.com>

mchalupa/dg,mchalupa/dg,mchalupa/dg,mchalupa/dg