remove pixels, add softbuffer for drawing to window

src/font_renderer.rs

@@ -52,12 +52,11 @@ impl FontRenderer8x8 {
         assert_eq!(canvas.pixels.len(), TILE_SIZE * TILE_SIZE);
         assert_eq!(canvas.stride, TILE_SIZE);
         let fallback_char = font.glyph_for_char(Self::FALLBACK_CHAR);
-        let result = Self {
+        Self {
             font: SendFont(font),
             fallback_char,
             canvas: Mutex::new(canvas),
-        };
-        result
+        }
     }
 
     pub fn from_name(family_name: String) -> Self {
@@ -118,7 +117,7 @@ impl FontRenderer8x8 {
             .as_ref()
             .glyph_for_char(char)
             .or(self.fallback_char)
-            .ok_or_else(|| GlyphNotFound(char))
+            .ok_or(GlyphNotFound(char))
     }
 }