Commits on Jun 12, 2018

1. Fix possibly endless loop in ReadDir iterator …

   Certain directories in `/proc` can cause the `ReadDir`
   iterator to loop indefinitely. We get an error code (22) when
   calling libc's `readdir_r` on these directories, but `entry_ptr`
   is `NULL` at the same time, signalling the end of the directory
   stream.
   
   This change introduces an internal state to the iterator such
   that the `Some(Err(..))` value will only be returned once when
   calling `next`. Subsequent calls will return `None`.
   
   fixes #50619

   

   sharkdp committed Jun 12, 2018
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