Remove unnecessary returns

src/curve.rs

@@ -927,8 +927,7 @@ impl ExtendedPoint {
             r = s.double(); s = r.to_projective();
         }
         // Unroll last iteration so we can go directly to_extended()
-        r = s.double();
-        return r.to_extended();
+        s.double().to_extended()
     }
 
     /// Determine if this point is of small order.

src/field.rs

@@ -907,7 +907,7 @@ impl FieldElement {
     ///
     /// If zero, return `1u8`.  Otherwise, return `0u8`.
     pub fn is_zero(&self) -> u8 {
-        return 1u8 & (!self.is_nonzero());
+        1u8 & (!self.is_nonzero())
     }
 
     /// Determine if this `FieldElement` is non-zero.