Fix cache lifetime parsing, closes #1484306.

svncommit

2007-03-30 bd495968426ba49d1c0340488ae7820f631323ff

 program/include/rcube_shared.inc

@@ -1565,7 +1565,7 @@
      $amount *= 24;
    case 'h':
      $amount *= 60;
    case 'h':
    case 'm':
      $amount *= 60;
    case 's':
      $ts += $amount * $factor;