[llvm] [SystemZ][z/OS] TXT records in the GOFF reader (PR #74526)

[Dan Liew via llvm-commits]

delcypher wrote:

@ysyeda We started seeing a test failure on the macOS bots after this change (plus a few others) landed. It seems likely that this PR caused the regression. Could you take look?

https://green.lab.llvm.org/job/llvm.org/job/clang-stage1-cmake-RA-incremental/287/testReport/junit/LLVM-Unit/Object___ObjectTests_GOFFObjectFileTest/TXTConstruct/

https://github.com/llvm/llvm-project/pull/74526