Get rid of warnings

diff --git a/src/main.rs b/src/main.rs
index 32202b8e372343948857716eb68b750ea19e8b6a..373a4012ec5cf518c1b827e080dac198f147e61f 100644 (file)
--- a/src/main.rs
+++ b/src/main.rs
@@ -128,7 +128,7 @@ fn make_png(dim_x: u32, dim_y: u32, scale: u32, data: &mut dyn Iterator<Item = u
         return Err(ImageError::dimension_error())
     }
 
-    let mut img: RgbImage = rgb_encode(ImageBuffer::new(dim_x, dim_y), data)?;
+    let img: RgbImage = rgb_encode(ImageBuffer::new(dim_x, dim_y), data)?;
 
     let tdim_x = dim_x * scale;
     let tdim_y = dim_y * scale;
@@ -165,7 +165,7 @@ async fn img_pgen0(req: HttpRequest, canvas0: web::Data<Arc<Mutex<Option<Canvas>
     let tdim_x = 32 * scale;
     let tdim_y = 32 * scale;
     let img: RgbImage = {
-        let mut canvas_option = &mut *canvas0.lock().unwrap();
+        let canvas_option = &mut *canvas0.lock().unwrap();
         let canvas = canvas_option.take();
         let canvas = rgb_encode_to_canvas(canvas.expect("Canvas doesn't exist!"), percent_decode_str(&data).into_iter().borrow_mut())?;
         canvas_option.insert(canvas).img.clone()