createUniqueFile() is documented to create the file in the temporary directory...

createUniqueFile() is documented to create the file in the temporary directory unless it's supplied an absolute path.

Make sure the output filepath supplied to createUniqueFile() in HTMLDiagnostics::ReportDiag() is absolute.

Summary: Make sure the output filepath supplied to createUniqueFile() in HTMLDiagnostics::ReportDiag() is absolute.

Reviewers: rsmith, akyrtzi

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D12774

llvm-svn: 248977