Rename variable to not use C++ reserved name (leading underscore + capital) (NFC)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@283616 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Driver/Action.cpp

@@ -125,8 +125,8 @@ InputAction::InputAction(const Arg &_Input, types::ID _Type)
 
 void BindArchAction::anchor() {}
 
-BindArchAction::BindArchAction(Action *Input, llvm::StringRef _ArchName)
-    : Action(BindArchClass, Input), ArchName(_ArchName) {}
+BindArchAction::BindArchAction(Action *Input, llvm::StringRef ArchName)
+    : Action(BindArchClass, Input), ArchName(ArchName) {}
 
 void OffloadAction::anchor() {}