Fix rust issue #123748 <rust-lang/rust#123748>

Author: Jala3400

src/lua_sim.rs

@@ -58,7 +58,8 @@ impl LuaSim {
         key_table.set("modifiers", format!("{:?}", key_event.modifiers))?;
         key_table.set("kind", format!("{:?}", key_event.kind))?;
 
-        self.simulation_instance
+        let _: () = self
+            .simulation_instance
             .as_ref()
             .unwrap()
             .call_method("handle_key_events", key_table)?;

src/main.rs

@@ -119,7 +119,7 @@ fn check_size(
     let height = terminal_size.height as usize;
     if width != current_width || height != current_height {
         app.change_dimensions(width as usize, height as usize);
-        simulation.call_method("set_particles", app.particles.clone())?;
+        let _: () = simulation.call_method("set_particles", app.particles.clone())?;
     }
 
     Ok(())