Ensure transactional with ? works in frame v2 (#7982)

substrate/frame/support/test/tests/pallet.rs

@@ -155,11 +155,11 @@ pub mod pallet {
 			#[pallet::compact] foo: u32,
 		) -> DispatchResultWithPostInfo {
 			Self::deposit_event(Event::Something(0));
-			if foo != 0 {
-				Ok(().into())
-			} else {
-				Err(Error::<T>::InsufficientProposersBalance.into())
+			if foo == 0 {
+				Err(Error::<T>::InsufficientProposersBalance)?;
 			}
+
+			Ok(().into())
 		}
 	}
 

substrate/frame/support/test/tests/storage_transaction.rs

@@ -195,7 +195,8 @@ fn transactional_annotation() {
 	#[transactional]
 	fn value_rollbacks(v: u32) -> result::Result<u32, &'static str> {
 		set_value(v)?;
-		Err("nah")
+		Err("nah")?;
+		Ok(v)
 	}
 
 	TestExternalities::default().execute_with(|| {