message: [SwiftASTContext] Simplify the code. NFCI.
  It was written in that form because the transition wasn't complete.
  Now we're good.
diff: @@ -6022,7 +6022,7 @@ SwiftASTContext::GetBitSize(lldb::opaque_compiler_type_t type,
  auto swift_scratch_ctx_lock = SwiftASTContextLock(&exe_ctx);
  CompilerType bound_type = BindAllArchetypes({this, type}, exe_scope);
  // Note thay the bound type may be in a different AST context.
  - return bound_type.GetBitSize(nullptr).getValueOr(0);
  + return bound_type.GetBitSize(exe_scope);
  }
  // lldb ValueObject subsystem expects functions to be a single
  