Server: fix use after free in deinit()

The input manager and seats must be destroyed before the display is
destroyed as they need to destroy their timer event sources used for key
repeat.

 river/Server.zig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/river/Server.zig b/river/Server.zig
index ebe9096..951ba9e 100644
--- a/river/Server.zig
+++ b/river/Server.zig
@@ -144,10 +144,10 @@ pub fn deinit(self: *Self) void {
     self.backend.destroy();
 
     self.root.deinit();
+    self.input_manager.deinit();
 
     self.wl_server.destroy();
 
-    self.input_manager.deinit();
     self.config.deinit();
 }