[asan] Better error message in coverage.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@224762 91177308-0d34-0410-b5e6-96231b3b80d8
[asan] Fix line >80 chars.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@224763 91177308-0d34-0410-b5e6-96231b3b80d8