erase temp image if a user go out off by other way (no save or no exit) when he is editing a image

main/document/document.php

@@ -46,11 +46,15 @@ require_once $lib_path . 'fileDisplay.lib.php';
 
 api_protect_course_script(true);
 
-//erase temp nanogons' audio
+//erase temp nanogons' audio, image edit
 if(isset($_SESSION['temp_audio_nanogong']) && !empty($_SESSION['temp_audio_nanogong'])) {
 	unlink($_SESSION['temp_audio_nanogong']);
 }
 
+if(isset($_SESSION['temp_realpath_image']) && !empty($_SESSION['temp_realpath_image'])) {
+	unlink($_SESSION['temp_realpath_image']);
+}
+
 //Removing sessions
 unset($_SESSION['draw_dir']);
 unset($_SESSION['paint_dir']);