[OPENMP] Fix for PR31416: Clang crashes on OMPCapturedExpr during source based coverage compilation Added source location info to captured expression declaration + fixed source location info for loop based directives. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@290181 91177308-0d34-0410-b5e6-96231b3b80d8