Merge #311

311: Simplify modify function from 5 to 2 lines of code r=ryankurte a=therealprof

Signed-off-by: Daniel Egger <daniel@eggers-club.de>

Co-authored-by: Daniel Egger <daniel@eggers-club.de>

Author: bors[bot]

src/generate/register.rs

@@ -49,10 +49,7 @@ pub fn render(
                 for<'w> F: FnOnce(&R, &'w mut W) -> &'w mut W
             {
                 let bits = self.register.get();
-                let r = R { bits };
-                let mut w = W { bits };
-                f(&r, &mut w);
-                self.register.set(w.bits);
+                self.register.set(f(&R { bits }, &mut W { bits }).bits);
             }
         });
     }