[BUGFIX] Info link in file context menu broken

The link for file info in the context menu of the file list module does
not work, as it missed the special identifier '_FILE'.

Change-Id: Ie9990e3800b0d4e8b49c2594b4ad96d9ffe9839b
Resolves: #41396
Releases: 6.0
Reviewed-on: http://review.typo3.org/15295
Reviewed-by: Steffen Ritter
Tested-by: Steffen Ritter

typo3/sysext/backend/Classes/ClickMenu/ClickMenu.php

@@ -749,7 +749,7 @@ class ClickMenu {
 			}
 			// Info
 			if (!in_array('info', $this->disabledItems)) {
-				$menuItems['info'] = $this->DB_info($identifier, '');
+				$menuItems['info'] = $this->fileInfo($identifier);
 			}
 			$menuItems[] = 'spacer';
 			// Copy:
@@ -901,6 +901,16 @@ class ClickMenu {
 		return $this->linkItem($this->label('pasteinto'), $this->excludeIcon(\TYPO3\CMS\Backend\Utility\IconUtility::getSpriteIcon('actions-document-paste-into')), $editOnClick . 'return false;');
 	}
 
+	/**
+	 * Adding ClickMenu element for file info
+	 *
+	 * @param string $identifier The combined identifier of the file.
+	 * @return array Item array, element in $menuItems
+	 */
+	protected function fileInfo($identifier) {
+		return $this->DB_info('_FILE', $identifier);
+	}
+
 	/***************************************
 	 *
 	 * DRAG AND DROP