tests: fix test-coredump-unwind without HAVE_EXECINFO_H (#165)
tests: fix test-coredump-unwind without HAVE_EXECINFO_H (#165)


libunwind/libunwind,frida/libunwind,vtjnash/libunwind,djwatson/libunwind,vtjnash/libunwind,frida/libunwind,libunwind/libunwind,vtjnash/libunwind,libunwind/libunwind,frida/libunwind,djwatson/libunwind,djwatson/libunwind