Why use while if only iterating once ?

[Venkat]

         while (1)
         {
             FLAGS f;
             switch (*p)
             {
             case 'U':
             case 'u':
                 f = FLAGS.unsigned;
                 goto L1;
             case 'l':
                 f = FLAGS.long_;
                 error("lower case integer suffix 'l' is not 
allowed. Please use 'L' instead");
                 goto L1;
             case 'L':
                 f = FLAGS.long_;
             L1:
                 p++;
                 if ((flags & f) && !err)
                 {
                     error("unrecognized token");
                     err = true;
                 }
                 flags = cast(FLAGS)(flags | f);
                 continue;
             default:
                 break;
             }
             break;
}


The last break statement prevents the loop from returned for a 
second iteration. Then why use a while ?