[llvm-cov] Clean up an awkward capture-by-reference (NFC)
authorVedant Kumar <vsk@apple.com>
Fri, 15 Jul 2016 01:19:35 +0000 (01:19 +0000)
committerVedant Kumar <vsk@apple.com>
Fri, 15 Jul 2016 01:19:35 +0000 (01:19 +0000)
commit84c452dea35be1515da81a2bec11a178bd001c8d
treecd1c85a8b4abf4a036b46fbb72d1455eaf8d23cc
parentf681e2e50647ed74992ea8476606e49d87b412c6
[llvm-cov] Clean up an awkward capture-by-reference (NFC)

Writing `for (StringRef &SourceFile : ...)` is strange to begin with.
Subsequently capturing "SourceFile" by reference is even stranger. Just
copy the StringRef, since that's cheap to do.

llvm-svn: 275515
llvm/tools/llvm-cov/CodeCoverage.cpp