[clang] [BoundsSafety] Unify ParseLexedAttributeTokens (PR #206689)

[Mohammed Ashraf via cfe-commits]

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@@ -783,20 +767,17 @@ void Parser::ParseLexedAttribute(LateParsedAttribute &LPA, bool EnterScope,
       Actions.ActOnReenterFunctionContext(Actions.CurScope, D);
     }
 
-    ParseGNUAttributeArgs(&LPA.AttrName, LPA.AttrNameLoc, Attrs,
-                          /*EndLoc=*/nullptr, /*ScopeName=*/nullptr,
-                          SourceLocation(), ParsedAttr::Form::GNU(),
-                          /*D=*/nullptr);
+    ParsedAttributes Parsed = ParseLexedAttributeTokens(LPA);
+    Attrs.takeAllAppendingFrom(Parsed);
 
     if (HasFuncScope)
       Actions.ActOnExitFunctionContext();
   } else if (OutAttrs) {
----------------
Holo-xy wrote:

There isn't a caller that reaches that path currently, but I'm not sure if there's a scenario where we would have 0 decls and a non-null OutAttrs (ParseLexedCAttribute had that guard before my first unify PR).

https://github.com/llvm/llvm-project/pull/206689