[clang] Fix warning after D116203

The warning was:
SemaType.cpp:9469:3: error: default label in switch
which covers all enumeration values
[-Werror,-Wcovered-switch-default]

diff --git a/clang/lib/Sema/SemaType.cpp b/clang/lib/Sema/SemaType.cpp
index 9ea9d80..313a534 100644 (file)
--- a/clang/lib/Sema/SemaType.cpp
+++ b/clang/lib/Sema/SemaType.cpp
@@ -9466,8 +9466,6 @@ QualType Sema::BuildUnaryTransformType(QualType BaseType, UTTKind UKind,
     Result = BuiltinChangeSignedness(BaseType, UKind, Loc);
     break;
   }
-  default:
-    llvm_unreachable("unknown unary transform type");
   }
 
   return !Result.isNull()