Refactor wgpu path to also support exit_on_window_close == false

Author: emilk

eframe/src/lib.rs

@@ -174,9 +174,11 @@ pub fn run_native(app_name: &str, native_options: NativeOptions, app_creator: Ap
         #[cfg(feature = "wgpu")]
         Renderer::Wgpu => {
             tracing::debug!("Using the wgpu renderer");
-            native::run::run_wgpu(app_name, &native_options, app_creator)
+            native::run::run_wgpu(app_name, &native_options, app_creator);
         }
     }
+
+    tracing::debug!("eframe window closed");
 }
 
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