should ignore bad symlinks

[hexmode]

I'm running this on a project that I've edited in emacs and it is crashing on the symlinks that emacs creates as lock files. Example

$ phptags index
...
  [1283 files, 34598 tags, 55%]PHP Warning:  file_get_contents(includes/db/.
#DatabaseMysqli.php): failed to open stream: No such file or directory in .../src/Parser.php on line 115                                                                             
PHP Fatal error:  Uncaught exception 'Exception' with message 'Error reading the contents of 'includes/db/.#DatabaseMysqli.php'' in .../src/Parser.php:117
Stack trace:
#0 .../phptags/src/Parser.php(52): PhpTags\Parser->getContents('...')
#1 .../src/IndexCommand.php(93): PhpTags\Parser->getTags('...')
#2 .../bin/phptags.php(135): PhpTags\IndexCommand->execute(Object(Closure))
#3 {main}
  thrown in .../src/Parser.php on line 117
$ ls -l includes/db/.#DatabaseMysqli.php 
lrwxrwxrwx 1 mah mah 40 Dec 26 16:14 includes/db/.#DatabaseMysqli.php -> [email protected]:1450395219