filebrowser hungs when reading a directory with a fifo-like file.

[ifsnop]

Description
If you create a fifo with mkfifo, and then browse the directory, filebrowser hungs indefinitely.

Expected behaviour
Browse directory as any other

What is happening instead?
browsing hungs

Additional context
If you remove the file from the filesystem and refresh the page, everything is shown ok.

How to reproduce?
Just "mkifo test_file" and then browse the directory, under linux. Happens with last release of filebrowser.

Files
A list of relevant files for this issue. Large files can be uploaded one-by-one or in a tarball/zipfile.