VersionPrinter - use const auto& iterator in for-range-loop.

Avoids unnecessary copies and silences clang tidy warning.

diff --git a/llvm/lib/Support/CommandLine.cpp b/llvm/lib/Support/CommandLine.cpp
index cee9608..12ef0d5 100644 (file)
--- a/llvm/lib/Support/CommandLine.cpp
+++ b/llvm/lib/Support/CommandLine.cpp
@@ -2537,7 +2537,7 @@ public:
     // information.
     if (ExtraVersionPrinters != nullptr) {
       outs() << '\n';
-      for (auto I : *ExtraVersionPrinters)
+      for (const auto &I : *ExtraVersionPrinters)
         I(outs());
     }