Index: wp-includes/deprecated.php
===================================================================
--- wp-includes/deprecated.php	(revision 38337)
+++ wp-includes/deprecated.php	(working copy)
@@ -3170,7 +3170,11 @@
 		$file = get_attached_file( $file );
 
 	if ( ! is_file( $file ) )
-		return sprintf(__('File “%s” doesn’t exist?'), $file);
+		return sprintf(
+			/* translators: %s: file name */
+			__( 'File “%s” doesn’t exist?' ),
+			$file
+		);
 
 	if ( ! function_exists('imagecreatefromstring') )
 		return __('The GD image library is not installed.');
@@ -3181,7 +3185,11 @@
 	$image = imagecreatefromstring( file_get_contents( $file ) );
 
 	if ( !is_resource( $image ) )
-		return sprintf(__('File “%s” is not an image.'), $file);
+		return sprintf(
+			/* translators: %s: file name */
+			__( 'File “%s” is not an image.' ),
+			$file
+		);
 
 	return $image;
 }