Merge pull request #1167 from mitchmindtree/unnecessary_mut

Remove unnecessary `mut` from `self` binding in `Ui::draw_if_changed`

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "conrod"
-version = "0.59.0"
+version = "0.59.1"
 authors = [
     "Mitchell Nordine <mitchell.nordine@gmail.com>",
     "Sven Nilsen <bvssvni@gmail.com>"

src/ui.rs

@@ -1132,7 +1132,7 @@ impl Ui {
     /// This ensures that conrod is drawn to each buffer in the case that there is buffer swapping
     /// happening. Let us know if you need finer control over this and we'll expose a way for you
     /// to set the redraw count manually.
-    pub fn draw_if_changed(&mut self) -> Option<render::Primitives> {
+    pub fn draw_if_changed(&self) -> Option<render::Primitives> {
         if self.redraw_count.load(atomic::Ordering::Relaxed) > 0 {
             return Some(self.draw())
         }