Add the "else" branch back

Co-authored-by: Mariya Podchishchaeva <[email protected]>

Author: srividya-sundaram

clang/lib/Sema/SemaSYCL.cpp

@@ -2912,6 +2912,7 @@ class SYCLKernelNameTypeVisitor
     QualType T = TA.getAsType();
     if (const auto *ET = T->getAs<EnumType>())
       VisitEnumType(ET);
+  else
     Visit(T);
   }