[llvm-readobj] - Fix 2 test cases.

https://reviews.llvm.org/D60122 (r357595) changed the
symbols description format.

This change fix two more new test cases to fix BB:
http://lab.llvm.org:8011/builders/clang-with-thin-lto-ubuntu/builds/16205/steps/test-stage1-compiler/logs/stdio

llvm-svn: 357598