FIX migration script for product photo

scripts/product/migrate_picture_path.php

@@ -104,6 +104,7 @@ function migrate_product_photospath($product)
 	global $conf;
 
 	$dir = $conf->product->multidir_output[$product->entity];
+	$conf->global->PRODUCT_USE_OLD_PATH_FOR_PHOTO = 1;
 	$origin = $dir .'/'. get_exdir($product->id,2,0,0,$product,'product') . $product->id ."/photos";
 	$destin = $dir.'/'.dol_sanitizeFileName($product->ref);