ignore files that were probably never created

File data is inserted into the database before being created on disk,
which means that it's possible for data to exist in the database that
doesn't exist on disk. In this case, the media deletion functions should
simply ignore this error.

src/service/media.rs

@@ -135,6 +135,10 @@ impl Service {
             Ok(()) => (),
             // The file in the fs may already have been deleted by hand
             Err(e) if e.kind() == std::io::ErrorKind::NotFound => (),
+            // The file may have never existed in the fs because the name was
+            // too long
+            #[cfg(unix)]
+            Err(e) if e.raw_os_error() == Some(nix::libc::ENAMETOOLONG) => (),
             other_error => other_error?,
         }
         self.db.delete_file_metadata(key)?;