Revert "Fix asan infinite loop on undefined symbol"

This reverts commit 63719119.

The tests in this commit were failing on a Linux sanitizer bot
and our internal CI.

http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux/builds/22401/steps/test%20standalone%20compiler-rt%20with%20symbolizer/logs/stdio

llvm-svn: 366472