Formspecs: Remove accidental empty 'quit' field

diff --git a/src/network/serverpackethandler.cpp b/src/network/serverpackethandler.cpp
index 4647bcc042b615c6130afd5868d8b320f41bc973..91caee0bd9ba452049619bff55502569dd9826ba 100644 (file)
--- a/src/network/serverpackethandler.cpp
+++ b/src/network/serverpackethandler.cpp
@@ -1511,7 +1511,8 @@ void Server::handleCommand_InventoryFields(NetworkPacket* pkt)
        if (peer_state_iterator != m_formspec_state_data.end()) {
                const std::string &server_formspec_name = peer_state_iterator->second;
                if (client_formspec_name == server_formspec_name) {
-                       if (fields["quit"] == "true")
+                       auto it = fields.find("quit");
+                       if (it != fields.end() && it->second == "true")
                                m_formspec_state_data.erase(peer_state_iterator);
 
                        m_script->on_playerReceiveFields(playersao, client_formspec_name, fields);