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When originally introduced to libunwind as part of #112171, FEAT_PAuthLR had its Call Frame Instruction's (CFI's) in a different location to other Signing Authentication methods. To incorporate this in libunwind, a 4 byte offset was introduced to work with this. However, this design was reversed in #121551 so the CFI's are emitted in the same location as other methods. When making this change, the offset in libunwind was not removed, so libunwind's PC value would be incorrect. As the 4 byte offset is no longer needed, that adjustment can be removed. results->ptrAuthDiversifier will still be set.