[llvm] [llvm-gsymutil] Fix dumping of call sites for merged functions (PR #119759)

[Kyungwoo Lee via llvm-commits]

https://github.com/kyulee-com approved this pull request.

LGTM.
Just curious about what 0x10 (relative address) means in this example. Does it refer to the relative address (an offset within the function) of the next instruction following the call instruction?

For each call-site of a function, all the merged functions and their call-site infos seem displayed. If there are multiple call-sites within a function, are the same merged functions and their call-sites displayed repetitively? 

https://github.com/llvm/llvm-project/pull/119759