[Sanitizer][test] Emit to stderr to fix android (#142207)

This test is broken on android by
https://github.com/llvm/llvm-project/pull/141820

https://lab.llvm.org/buildbot/#/builders/186/builds/9498

> FileCheck error: '' is empty.

I suspect that on android printf only works if its emitted to stderr
because this use to work

https://github.com/llvm/llvm-project/blob/a2ce5647200ad40ae356affd44db7d054de444d2/compiler-rt/test/sanitizer_common/TestCases/Posix/sanitizer_set_report_path_test.cpp#L21-L22

Only emit to stderr and see if that fixes the test.

GitOrigin-RevId: 986f519d1f7606dd4ac374d467c79f7dfa36c00a
1 file changed