The return of Cast is simplified

Author: Daniil Klimov

src/bindgen/ir/ty.rs

@@ -270,14 +270,7 @@ impl ConstExpr {
                 let generic_path = GenericPath::load(&path.path)?;
                 Ok(ConstExpr::Name(generic_path.export_name().to_owned()))
             }
-            syn::Expr::Cast(ref cast) => {
-                let expr = match *cast.expr {
-                    syn::Expr::Path(ref path) => path,
-                    _ => return Err(format!("can't handle const expression {:?}", cast)),
-                };
-                let generic_path = GenericPath::load(&expr.path)?;
-                Ok(ConstExpr::Name(generic_path.export_name().to_owned()))
-            }
+            syn::Expr::Cast(ref cast) => Ok(ConstExpr::load(&cast.expr)?),
             _ => Err(format!("can't handle const expression {:?}", expr)),
         }
     }