cap size to work around loop resize bug

strafe-client/src/graphics_worker.rs

@@ -34,8 +34,8 @@ pub fn new(
 			Instruction::Resize(size,user_settings)=>{
 				println!("Resizing to {:?}",size);
 				//let t0=std::time::Instant::now();
-				config.width=size.width.max(1);
-				config.height=size.height.max(1);
+				config.width=size.width.clamp(1,1920/2);
+				config.height=size.height.clamp(1,1080/2);
 				surface.configure(&device,&config);
 				graphics.resize(&device,&config,&user_settings);
 				//println!("Resize took {:?}",t0.elapsed());