def-use: fix memset intrinsic call
def-use: fix memset intrinsic call

memset sets the memory to some i8 value, not pointer,
thus we cannot use getOperand() on that

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

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