Fix fd leak from keymap updates

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 - Fixed clipboard crashing, when seat has neither keyboard nor pointer focus
 - Advertise UTF8_STRING mimetype
+- Fixed fd leaking from keymap updates
 
 ## 0.5.1 -- 2020-07-10
 

src/worker/handlers.rs

@@ -1,6 +1,8 @@
 #![macro_use]
 
+use std::fs::File;
 use std::io::Result;
+use std::os::unix::io::FromRawFd;
 use std::sync::mpsc::Sender;
 
 use sctk::reexports::client::protocol::wl_keyboard::Event as KeyboardEvent;
@@ -120,6 +122,10 @@ pub fn keyboard_handler(seat: WlSeat, event: KeyboardEvent, mut dispatch_data: D
         KeyboardEvent::Leave { .. } => {
             dispatch_data.remove_seat(seat);
         }
+        KeyboardEvent::Keymap { fd, .. } => {
+            // Prevent fd leaking.
+            let _ = unsafe { File::from_raw_fd(fd) };
+        }
         _ => {}
     }
 }