Add debugging for Sapling decode

Reviewed-on: #62

librustzcash-wrapper/src/lib.rs

@@ -766,19 +766,19 @@ pub extern "C" fn rust_wrapper_sapling_esk_decrypt(
                             marshall_to_haskell_var(&hn, out, out_len, RW);
                         },
                         None => {
-                            let hn0 = Hnote { note: 0, recipient: vec![0], memo: vec![0], nullifier: vec![0]};
+                            let hn0 = Hnote { note: 1000, recipient: vec![0], memo: vec![0], nullifier: vec![0]};
                             marshall_to_haskell_var(&hn0, out, out_len, RW);
                         }
                     }
                 },
                 Err(_e1) => {
-                    let hn0 = Hnote { note: 0, recipient: vec![0], memo: vec![0], nullifier: vec![0] };
+                    let hn0 = Hnote { note: 2000, recipient: vec![0], memo: vec![0], nullifier: vec![0] };
                     marshall_to_haskell_var(&hn0, out, out_len, RW);
                 }
             }
         },
         Err(_e) => {
-            let hn0 = Hnote { note: 0, recipient: vec![0], memo: vec![0], nullifier: vec![0] };
+            let hn0 = Hnote { note: 3000, recipient: vec![0], memo: vec![0], nullifier: vec![0] };
             marshall_to_haskell_var(&hn0, out, out_len, RW);
         }
     }