[clang] Fix the double space and double attribute printing of the final keyword. (PR #88600)

[Vassil Vassilev via cfe-commits]

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@@ -275,13 +278,15 @@ void DeclPrinter::prettyPrintAttributes(const Decl *D,
           if (Pos != AttrPosAsWritten::Left)
             Out << ' ';
           A->printPretty(Out, Policy);
+          hasPrinted = true;
           if (Pos == AttrPosAsWritten::Left)
             Out << ' ';
         }
         break;
       }
     }
   }
+  return hasPrinted;
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vgvassilev wrote:

I was thinking to use something like that but I believe the boolean flag is more readable. I'd like to keep it the way it is.

https://github.com/llvm/llvm-project/pull/88600