Fix clippy.

src/wasm/macros.rs

@@ -11,6 +11,7 @@ macro_rules! to_wasm {
                 $wasm_context: crate::wasm::to_wasm::ToWasmContext<'_>,
             ) -> Result<Self::Output, crate::error::CustomError> {
                 let $original = self;
+                #[allow(unused_braces)]
                 $fnbody
             }
         }