scripted-diff: Rename COutput member variables

Update the member variables to match the new style

-BEGIN VERIFY SCRIPT-
sed -i 's/fSpendableIn/spendable/' $(git grep -l "fSpendableIn")
sed -i 's/fSpendable/spendable/' $(git grep -l "fSpendable")
sed -i 's/fSolvableIn/solvable/' $(git grep -l "fSolvableIn")
sed -i 's/fSolvable/solvable/' $(git grep -l "fSolvable")
sed -i 's/fSafeIn/safe/' $(git grep -l "fSafeIn")
sed -i 's/fSafe/safe/' $(git grep -l "fSafe")
sed -i 's/nInputBytes/input_bytes/' $(git grep -l "nInputBytes")
sed -i 's/nDepthIn/depth/' $(git grep -l "nDepthIn" src/wallet src/bench)
sed -i 's/nDepth/depth/' src/wallet/spend.h
sed -i 's/\.nDepth/.depth/' $(git grep -l "\.nDepth" src/wallet/)
sed -i 's/nDepth, FormatMoney/depth, FormatMoney/' src/wallet/spend.cpp
-END VERIFY SCRIPT-

src/wallet/interfaces.cpp

@@ -420,7 +420,7 @@ public:
             auto& group = result[entry.first];
             for (const auto& coin : entry.second) {
                 group.emplace_back(COutPoint(coin.tx->GetHash(), coin.i),
-                    MakeWalletTxOut(*m_wallet, *coin.tx, coin.i, coin.nDepth));
+                    MakeWalletTxOut(*m_wallet, *coin.tx, coin.i, coin.depth));
             }
         }
         return result;