Commits on Dec 7, 2020

1. Stabilize a condition …

   While looking into the race condition described in 125, I noticed a potentially related issue.
   
   As per the documentation of [realpath()](https://www.php.net/manual/en/function.realpath.php#refsect1-function.realpath-returnvalues):
   > realpath() returns FALSE on failure, e.g. if the file does not exist.
   
   In the rare case that `realpath()` _would_ return `false` within this plugin, `false` would subsequently be passed on to `is_dir()` and `is_readable()` which both expect a string path.
   
   This tiny change make the condition fail earlier by checking the return value of `realpath()`.

   

   jrfnl committed Dec 7, 2020
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