Fix comparing nextCheckAt with previous config

scripts/content.js

@@ -505,6 +505,7 @@ async function runner() {
         } // end consulates loop
 
         for (let consulate in config.consulates) {
+            if (!prev_config?.consulates?.[consulate]) continue;
             if (config.consulates[consulate].nextCheckAt != prev_config.consulates[consulate].nextCheckAt) {
                 console.log(`Next check for ${consulate} at ${config.consulates[consulate].nextCheckAt}`);
             }