Rangify for loops, NFC.

llvm-svn: 243841
diff --git a/clang/lib/CodeGen/CodeGenAction.cpp b/clang/lib/CodeGen/CodeGenAction.cpp
index 0e7b6d8..8f5ee6f 100644
--- a/clang/lib/CodeGen/CodeGenAction.cpp
+++ b/clang/lib/CodeGen/CodeGenAction.cpp
@@ -333,8 +333,7 @@
       DiagnosticBuilder B = Diags.Report(Loc, diag::note_fe_inline_asm_here);
       // Convert the SMDiagnostic ranges into SourceRange and attach them
       // to the diagnostic.
-      for (unsigned i = 0, e = D.getRanges().size(); i != e; ++i) {
-        std::pair<unsigned, unsigned> Range = D.getRanges()[i];
+      for (const std::pair<unsigned, unsigned> &Range : D.getRanges()) {
         unsigned Column = D.getColumnNo();
         B << SourceRange(Loc.getLocWithOffset(Range.first - Column),
                          Loc.getLocWithOffset(Range.second - Column));