[llvm] [BOLT][NFC] Unify two symbol table iterations (PR #90724)

[Donghee Na via llvm-commits]

corona10 wrote:

There was a binary issue from Fedora 39 and I tested with release pre-built binary that given more proper information
But anyway, for me, it's noisy level changes.

CPU: AMD Ryzen™ 7 8845HS 
Memory: 32gb

AS-IS
---User Time---   --System Time--   --User+System--   ---Wall Time---  --- Name ---
 0.0789 ( 21.2%)   0.0063 (  2.1%)   0.0851 ( 12.6%)   0.0854 ( 12.6%)  discover file objects

TO-BE
---User Time---   --System Time--   --User+System--   ---Wall Time---  --- Name ---
0.0804 ( 20.3%)   0.0046 (  1.6%)   0.0850 ( 12.3%)   0.0853 ( 12.3%)  discover file objects

https://github.com/llvm/llvm-project/pull/90724