[pbs-devel] [PATCH backup 11/13] restore_daemon: use map_while instead of filter_map(Result::ok)

[Maximiliano Sandoval]

Fixes the lines_filter_map_ok clippy lint:

```
warning: `filter_map()` will run forever if the iterator repeatedly produces an `Err`
   --> proxmox-restore-daemon/src/proxmox_restore_daemon/disk.rs:195:14
    |
195 |             .filter_map(Result::ok)
    |              ^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `map_while(Result::ok)`
    |
note: this expression returning a `std::io::Lines` may produce an infinite number of `Err` in case of a read error
   --> proxmox-restore-daemon/src/proxmox_restore_daemon/disk.rs:193:18
    |
193 |           for f in BufReader::new(File::open("/proc/filesystems")?)
    |  __________________^
194 | |             .lines()
    | |____________________^
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#lines_filter_map_ok
    = note: `#[warn(clippy::lines_filter_map_ok)]` on by default
```

Signed-off-by: Maximiliano Sandoval <m.sandoval at proxmox.com>
---
 proxmox-restore-daemon/src/proxmox_restore_daemon/disk.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/proxmox-restore-daemon/src/proxmox_restore_daemon/disk.rs b/proxmox-restore-daemon/src/proxmox_restore_daemon/disk.rs
index f60dbbfa2..50fbf315e 100644
--- a/proxmox-restore-daemon/src/proxmox_restore_daemon/disk.rs
+++ b/proxmox-restore-daemon/src/proxmox_restore_daemon/disk.rs
@@ -192,7 +192,7 @@ impl Filesystems {
         let mut supported_fs = Vec::new();
         for f in BufReader::new(File::open("/proc/filesystems")?)
             .lines()
-            .filter_map(Result::ok)
+            .map_while(Result::ok)
         {
             // ZFS is treated specially, don't attempt to do a regular mount with it
             let f = f.trim();
-- 
2.39.5