[analyzer] Use "issue hash" in CmpRuns; followup on r158180

(For the future: It would be more efficient to produce a hash key with
the embedded function info inside the compiler.)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158187 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed