scripted-diff: rename nDepth -> depth

-BEGIN VERIFY SCRIPT-
s() { sed -i -e 's/nDepth/depth/g' $(git grep -l 'nDepth' $1); }
s src/qt/transactiondesc.cpp
-END VERIFY SCRIPT-

src/qt/transactiondesc.cpp

@@ -34,16 +34,16 @@ using wallet::isminetype;
 
 QString TransactionDesc::FormatTxStatus(const interfaces::WalletTx& wtx, const interfaces::WalletTxStatus& status, bool inMempool, int numBlocks)
 {
-    int nDepth = status.depth_in_main_chain;
-    if (nDepth < 0) {
-        return tr("conflicted with a transaction with %1 confirmations").arg(-nDepth);
-    } else if (nDepth == 0) {
+    int depth = status.depth_in_main_chain;
+    if (depth < 0) {
+        return tr("conflicted with a transaction with %1 confirmations").arg(-depth);
+    } else if (depth == 0) {
         const QString abandoned{status.is_abandoned ? QLatin1String(", ") + tr("abandoned") : QString()};
         return tr("0/unconfirmed, %1").arg(inMempool ? tr("in memory pool") : tr("not in memory pool")) + abandoned;
-    } else if (nDepth < 6) {
-        return tr("%1/unconfirmed").arg(nDepth);
+    } else if (depth < 6) {
+        return tr("%1/unconfirmed").arg(depth);
     } else {
-        return tr("%1 confirmations").arg(nDepth);
+        return tr("%1 confirmations").arg(depth);
     }
 }