Use the updated name for the attribute.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186864 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGCall.cpp b/lib/CodeGen/CGCall.cpp
index 45c6790..0a202ef 100644
--- a/lib/CodeGen/CGCall.cpp
+++ b/lib/CodeGen/CGCall.cpp
@@ -1070,7 +1070,7 @@
                            CodeGenOpts.UnsafeFPMath ? "true" : "false");
     FuncAttrs.addAttribute("use-soft-float",
                            CodeGenOpts.SoftFloat ? "true" : "false");
-    FuncAttrs.addAttribute("ssp-buffer-size",
+    FuncAttrs.addAttribute("stack-protector-buffer-size",
                            llvm::utostr(CodeGenOpts.SSPBufferSize));
   }