Issue #3173873 by shetpooja04: Unused variable $pos in SearchQuery.php, search module

    // search expression. So, use string replacement to change this to a

    // calculated query expression, counting the number of occurrences so

    // in the execute() method we can add arguments.

    while (($pos = strpos($score, 'i.relevance')) !== FALSE) {

    while (strpos($score, 'i.relevance') !== FALSE) {

      $pieces = explode('i.relevance', $score, 2);

      $score = implode('((ROUND(:normalization_' . $this->relevance_count . ', 4)) * i.score * t.count)', $pieces);

      $this->relevance_count++;