RPC console: don't crash on invalid input exception

src/qt/rpcconsole.cpp

@@ -55,12 +55,13 @@ void RPCExecutor::start()
 void RPCExecutor::request(const QString &command)
 {
     // Parse shell-like command line into separate arguments
+    std::string strMethod;
+    std::vector<std::string> strParams;
+    try {
         boost::escaped_list_separator<char> els('\\',' ','\"');
         std::string strCommand = command.toStdString();
         boost::tokenizer<boost::escaped_list_separator<char> > tok(strCommand, els);
 
-    std::string strMethod;
-    std::vector<std::string> strParams;
         int n = 0;
         for(boost::tokenizer<boost::escaped_list_separator<char> >::iterator beg=tok.begin(); beg!=tok.end();++beg,++n)
         {
@@ -69,6 +70,12 @@ void RPCExecutor::request(const QString &command)
             else
                 strParams.push_back(*beg);
         }
+    }
+    catch(boost::escaped_list_error &e)
+    {
+        emit reply(RPCConsole::CMD_ERROR, QString("Parse error"));
+        return;
+    }
 
     try {
         std::string strPrint;