Declaration misplaced for instanceof pattern

[zbynek]

The following method:

// import java.util.List;

public int bug(List<List<Object>> matrix) {
	List<Object> row = matrix.get(0);
	int offset = 0;
	while (offset < row.size() && row.get(offset) instanceof String function) {
		if (function.isEmpty()) {
			offset++;
		} else {
			offset += 2;
		}
	}
	if (offset > 0 && row.get(offset - 1) instanceof String function) {
		if (function.isEmpty()) {
			offset--;
		}
	}
	return offset;
}

gets translated into

- (int32_t)bugWithJavaUtilList:(id<JavaUtilList>)matrix {
  id tmp = [((id<JavaUtilList>) nil_chk(row)) getWithInt:offset - 1];
  NSString *function = nil;
  id tmp_1 = [row getWithInt:offset];
  NSString *function_1 = nil;
  id<JavaUtilList> row = JreRetainedLocalValue([((id<JavaUtilList>) nil_chk(matrix)) getWithInt:0]);
  int32_t offset = 0;
  while (offset < [((id<JavaUtilList>) nil_chk(row)) size] && [tmp_1 isKindOfClass:[NSString class]] && (function_1 = (NSString *) tmp_1, true)) {
    if ([((NSString *) nil_chk(function_1)) isEmpty]) {
      offset++;
    }
    else {
      offset += 2;
    }
  }
  if (offset > 0 && [tmp isKindOfClass:[NSString class]] && (function = (NSString *) tmp, true)) {
    if ([((NSString *) nil_chk(function)) isEmpty]) {
      offset--;
    }
  }
  return offset;
}

which is wrong; the variables tmp and tmp_1 need to be declared after offset and row. Compilation of the generated code fails with
error: use of undeclared identifier 'row'.

Reproducible with f49498e