qt, rpc, refactor: Return early in RPCConsole::on_lineEdit_returnPressed

src/qt/rpcconsole.cpp

@@ -926,8 +926,10 @@ void RPCConsole::on_lineEdit_returnPressed()
 {
     QString cmd = ui->lineEdit->text();
 
-    if(!cmd.isEmpty())
+    if (cmd.isEmpty()) {
-    {
+        return;
+    }
+
     std::string strFilteredCmd;
     try {
         std::string dummy;
@@ -942,8 +944,6 @@ void RPCConsole::on_lineEdit_returnPressed()
 
     ui->lineEdit->clear();
 
-        cmdBeforeBrowsing = QString();
-
 #ifdef ENABLE_WALLET
     WalletModel* wallet_model = ui->WalletSelector->currentData().value<WalletModel*>();
 
@@ -955,7 +955,7 @@ void RPCConsole::on_lineEdit_returnPressed()
         }
         m_last_wallet_model = wallet_model;
     }
-#endif
+#endif // ENABLE_WALLET
 
     message(CMD_REQUEST, QString::fromStdString(strFilteredCmd));
     //: A console message indicating an entered command is currently being executed.
@@ -969,14 +969,14 @@ void RPCConsole::on_lineEdit_returnPressed()
     // Append command to history
     history.append(cmd);
     // Enforce maximum history size
-        while(history.size() > CONSOLE_HISTORY)
+    while (history.size() > CONSOLE_HISTORY) {
         history.removeFirst();
+    }
     // Set pointer to end of history
     historyPtr = history.size();
 
     // Scroll console view to end
     scrollToEnd();
-    }
 }
 
 void RPCConsole::browseHistory(int offset)