mylocation: Fix selecting Frankfurt not saved

Corrected check for selected location = "???".

apps/mylocation/ChangeLog

@@ -1,3 +1,4 @@
 0.01: First release
 0.02: Enhanced icon, make it bolder
 0.03: Fixed issue with defaulting back to London
+0.04: Fixed issue selecting Frankfurt not saved

apps/mylocation/metadata.json

@@ -4,7 +4,7 @@
   "icon": "mylocation.png",
   "type": "app",
   "screenshots": [{"url":"screenshot_1.png"}],
-  "version":"0.03",
+  "version":"0.04",
   "description": "Sets and stores the lat and long of your preferred City or it can be set from the GPS. mylocation.json can be used by other apps that need your main location lat and lon. See README",
   "readme": "README.md",
   "tags": "tool,utility",

apps/mylocation/mylocation.app.js

@@ -61,7 +61,7 @@ function showMainMenu() {
       min: 0, max: locations.length - 1,
       format: v => locations[v],
       onchange: v => {
-        if (v != 6) {
+        if (locations[v] !== "???") {
           s.location = locations[v];
           s.lat = lats[v];
           s.lon = lons[v];