privacy_mode_win_magnifier: fix crash when resolution changed

Signed-off-by: fufesou <shuanglongchen@yeah.net>

src/main.rs

@@ -1,6 +1,6 @@
 // Specify the Windows subsystem to eliminate console window.
 // Requires Rust 1.18.
-#![windows_subsystem = "windows"]
+//#![windows_subsystem = "windows"]
 
 use hbb_common::log;
 use librustdesk::*;

src/server/video_service.rs

@@ -269,6 +269,7 @@ fn create_capturer(privacy_mode_id: i32, display: Display) -> ResultType<Box<dyn
                             PRIVACY_WINDOW_NAME
                         );
                     }
+                    log::info!("Create maginifier capture for {}", privacy_mode_id);
                     c = Some(Box::new(c1));
                 }
                 Err(e) => {