Fix another text wrap issue (added test case)

Aleksander Machniak

2013-05-03 2ce01932fef0abfc6d76dc134024c879a72f9cb7

 program/lib/Roundcube/rcube_mime.php

@@ -659,8 +659,8 @@
                                $cutLength = $spacePos + 1;
                            }
                            else {
                                $subString = $string;
                                $cutLength = null;
                                $subString = $substr_func($string, 0, $breakPos, $charset);
                                $cutLength = $breakPos + 1;
                            }
                        }
                        else {