[Frontend/CompilerInvocation] Use range-based loop. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@250559 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index 61144fc558bcac5d66f2524b344987831be40b1e..d4f204495251c5a9d0136da671d50a2ce638c8ed 100644 (file)
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -1986,8 +1986,8 @@ void ModuleSignature::flush() {
 }
 
 void ModuleSignature::add(StringRef Value) {
-  for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I)
-    add(*I, 8);
+  for (auto &S : Value)
+    add(S, 8);
 }
 
 llvm::APInt ModuleSignature::getAsInteger() const {