[compiler-rt] [AIX][PGO] Handle atexit functions when dlclose'ing shared libraries (PR #102940)

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``````````bash
git-clang-format --diff a0c57a0f3c6b44ce8f2c7222d0932df85883cf06 9207d3dcc60e04ee979c3a311a6736e515a10ce9 --extensions c,h -- compiler-rt/test/profile/instrprof-fork.c compiler-rt/lib/profile/GCDAProfiling.c compiler-rt/lib/profile/InstrProfilingFile.c compiler-rt/lib/profile/InstrProfilingUtil.c compiler-rt/lib/profile/InstrProfilingUtil.h
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``````````diff
diff --git a/compiler-rt/test/profile/instrprof-fork.c b/compiler-rt/test/profile/instrprof-fork.c
index 8b2bdd056a..8913087bd0 100644
--- a/compiler-rt/test/profile/instrprof-fork.c
+++ b/compiler-rt/test/profile/instrprof-fork.c
@@ -27,4 +27,4 @@ int main(void) {      //   child     | parent
   if (pid)            // ------------+------------
     wait(&status);    //    2     1  |    2    0
   return 0;           // (*)  the child inherits counter values prior to fork
-}                     //      from the parent in non-continuous mode.
+} //      from the parent in non-continuous mode.

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https://github.com/llvm/llvm-project/pull/102940