[PATCH 0/1] MR5315: dbghelp: Fix PDB processing using the FPO stream instead of FPOEXT

[Kyrylo Babikov (＠dank_meme)]

Since wine 9.3 (particularly [this commit](https://gitlab.winehq.org/wine/wine/-/commit/552bc893e17a0e046c2f598e0f18dc3...)), `pdb_process_internal` mistakenly sets `fpoext_stream` to the FPO stream (`sub_streams[PDB_SIDX_FPO]`) instead of the FPOEXT stream (`sub_streams[PDB_SIDX_FPOEXT]`), causing the PDB file to be improperly processed.

This merge request fixes that oversight.