Remove double escape_string on test edit - ref 6558

main/exercice/answer.class.php

@@ -467,7 +467,6 @@ class Answer {
 		$TBL_REPONSES = Database :: get_course_table(TABLE_QUIZ_ANSWER);
         $table_track_e_attempt   = Database::get_statistic_table(TABLE_STATISTIC_TRACK_E_ATTEMPT);
 		$questionId   = intval($this->questionId);
-       
 		       
 		$c_id = $this->course['real_id'];
 		// inserts new answers into data base
@@ -487,7 +486,9 @@ class Answer {
                 $flag = 1;
 			    $sql.="($c_id, '$i','$questionId','$answer','$correct','$comment','$weighting','$position','$hotspot_coordinates','$hotspot_type','$destination'),";
             } else {
-                $this->updateAnswers($answer, $comment, $correct, $weighting, $position, $destination);
+                // https://support.chamilo.org/issues/6558
+                // function updateAnswers already escape_string, error if we do it twice. Feed function updateAnswers with none escaped strings
+                $this->updateAnswers($this->new_answer[$i], $this->new_comment[$i], $this->new_correct[$i], $this->new_weighting[$i], $this->new_position[$i], $this->new_destination[$i]);
             }
         }
 		if ($flag == 1) {