Update Codegen_Xtensa::print_assignment() from #6195

Handles need to be `auto *` for the previous PR to work properly. (This should be refactored more intelligently to reduce code reuse; this is just a quick-fix to unbreak.)

src/CodeGen_Xtensa.cpp

@@ -1973,7 +1973,14 @@ string CodeGen_Xtensa::print_assignment(Type t, const std::string &rhs) {
  auto cached = cache.find(rhs);
  if (cached == cache.end()) {
  id = unique_name('_');
- stream << get_indent() << print_type(t, AppendSpace) << (t.is_handle() ? " __restrict " : "") << (output_kind == CPlusPlusImplementation ? "const " : "") << id << " = " << rhs << ";\n";
+ const char *const_flag = output_kind == CPlusPlusImplementation ? "const " : "";
+ if (t.is_handle()) {
+ // Don't print void *, which might lose useful type information. just use auto.
+ stream << get_indent() << "auto * __restrict ";
+ } else {
+ stream << get_indent() << print_type(t, AppendSpace);
+ }
+ stream << const_flag << id << " = " << rhs << ";\n";
  cache[rhs] = id;
  } else {
  id = cached->second;