[clang][bytecode][NFC] Add missing LLVM_PREFERRED_TYPE to bitfield

Author: tbaederr

clang/lib/AST/ByteCode/Descriptor.h

@@ -95,7 +95,8 @@ struct InlineDescriptor {
   /// Flag indicating if the field is the active member of a union.
   LLVM_PREFERRED_TYPE(bool)
   unsigned IsActive : 1;
-  /// Flat indicating if this field is in a union (even if nested).
+  /// Flag indicating if this field is in a union (even if nested).
+  LLVM_PREFERRED_TYPE(bool)
   unsigned InUnion : 1;
   LLVM_PREFERRED_TYPE(bool)
   /// Flag indicating if the field is mutable (if in a record).