Revert "Turn some C-style vararg into variadic templates"

This reverts commit r299699, the examples needs to be updated.

llvm-svn: 299702
diff --git a/llvm/lib/CodeGen/StackProtector.cpp b/llvm/lib/CodeGen/StackProtector.cpp
index 7230b01..e3fdb96 100644
--- a/llvm/lib/CodeGen/StackProtector.cpp
+++ b/llvm/lib/CodeGen/StackProtector.cpp
@@ -481,15 +481,16 @@
   IRBuilder<> B(FailBB);
   B.SetCurrentDebugLocation(DebugLoc::get(0, 0, F->getSubprogram()));
   if (Trip.isOSOpenBSD()) {
-    Constant *StackChkFail = M->getOrInsertFunction(
-        "__stack_smash_handler", Type::getVoidTy(Context),
-        Type::getInt8PtrTy(Context));
+    Constant *StackChkFail =
+        M->getOrInsertFunction("__stack_smash_handler",
+                               Type::getVoidTy(Context),
+                               Type::getInt8PtrTy(Context), nullptr);
 
     B.CreateCall(StackChkFail, B.CreateGlobalStringPtr(F->getName(), "SSH"));
   } else {
     Constant *StackChkFail =
-        M->getOrInsertFunction("__stack_chk_fail", Type::getVoidTy(Context));
-
+        M->getOrInsertFunction("__stack_chk_fail", Type::getVoidTy(Context),
+                               nullptr);
     B.CreateCall(StackChkFail, {});
   }
   B.CreateUnreachable();