feature 2548 multisize - added a page to build missing derivatives

- browser driven, chained ws calls to retrieve urls, visual feedback of progress through slideshow

git-svn-id: http://piwigo.org/svn/trunk@12865 68402e56-0260-453c-a942-63ccdbb3a9ee

admin/include/image.class.php

@@ -704,6 +704,7 @@ class image_gd implements imageInterface
 		// Place the source image in the destination image
 		imagecopy($cut, $ioverlay, 0, 0, 0, 0, $ow, $oh);
 		imagecopymerge($this->image, $cut, $x, $y, 0, 0, $ow, $oh, $opacity);
+    imagedestroy($cut);
     return true;
   }