PSS llvm: fix getting points-to information
PSS llvm: fix getting points-to information

we need to return 'return' node (that keeps pointers)
for call and for function pointer call too

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

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