[dsymutil] Fix handling of inlined_subprogram low_pcs

The value of an inlined subprogram low_pc attribute should not
get relocated, but it can happen that it matches the enclosing
function's start address and thus gets the generic treatment.
Special case it to avoid applying the PC offset twice.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@246406 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed