f further simplify code as suggested by Jeff

Author: TheBlueMatt

lightning/src/ln/channelmanager.rs

@@ -2316,9 +2316,9 @@ impl<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> ChannelMana
 			// it.
 			let mut valid_mpp = sources[0].payment_data.total_msat >= expected_amount;
 			for htlc in sources.iter() {
-				if !valid_mpp { break; }
 				if let None = channel_state.as_ref().unwrap().short_to_id.get(&htlc.prev_hop.short_channel_id) {
 					valid_mpp = false;
+					break;
 				}
 			}