The latest perf tool can return non-empty buffer when executing
buildid-list command, even when perf.data was recorded with -B flag.
Some binaries will be listed without the ID, while others may have a
recorded ID. Allow invalid entires on the input, while checking the
valid ones for the match.
Reviewed By: Amir
Differential Revision: https://reviews.llvm.org/D130223
Maksim Panchenko