[clang] [clang] __builtin_os_log_format has incorrect PrintfFormat Attribute argument (PR #178320)

[Oliver Hunt via cfe-commits]

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@@ -4970,8 +4970,7 @@ def OSLogFormatBufferSize : Builtin {
 
 def OSLogFormat : Builtin {
   let Spellings = ["__builtin_os_log_format"];
-  // FIXME: The printf attribute looks suspiciously like it should be argument #1.
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ojhunt wrote:

I had not actual registered this fixme being present, that's hilarious :D

https://github.com/llvm/llvm-project/pull/178320