Update DB_query_builder.php

Fix count_all_result if QB query contains HAVING clause

Author: Reconix

ForgeIgniter/system/database/DB_query_builder.php

@@ -1412,7 +1412,7 @@ public function count_all_results($table = '', $reset = TRUE)
 		$qb_cache_orderby = $this->qb_cache_orderby;
 		$this->qb_orderby = $this->qb_cache_orderby = array();
 
-		$result = ($this->qb_distinct === TRUE OR ! empty($this->qb_groupby) OR ! empty($this->qb_cache_groupby) OR $this->qb_limit OR $this->qb_offset)
+		$result = ($this->qb_distinct === TRUE OR ! empty($this->qb_groupby) OR ! empty($this->qb_cache_groupby) OR ! empty($this->qb_having) OR $this->qb_limit OR $this->qb_offset)
 			? $this->query($this->_count_string.$this->protect_identifiers('numrows')."\nFROM (\n".$this->_compile_select()."\n) CI_count_all_results")
 			: $this->query($this->_compile_select($this->_count_string.$this->protect_identifiers('numrows')));