settings: save altitude on `E.kill` event

apps/setting/ChangeLog

@@ -85,3 +85,4 @@ of 'Select Clock'
 0.74: Add extra layer of checks before allowing a factory reset (fix #3476)
 0.75: Restore previous menu's scroll positions
 0.76: Add altitude calibration menu (and update README after menu changed)
+0.77: Save altitude calibration when user exits via reset

apps/setting/metadata.json

@@ -1,7 +1,7 @@
 {
   "id": "setting",
   "name": "Settings",
-  "version": "0.76",
+  "version": "0.77",
   "description": "A menu for setting up Bangle.js",
   "icon": "settings.png",
   "tags": "tool,system",

apps/setting/settings.js

@@ -1043,6 +1043,7 @@ function showAltitude() {
 
   Bangle.setBarometerPower(1,"settings");
   Bangle.on("pressure",onPressure);
+  E.on("kill", altitudeDone);
   var seaLevelPressure = Bangle.getOptions().seaLevelPressure;
   if (!isFinite(seaLevelPressure)) seaLevelPressure=1013.25;
   var menuPressure = {value:"-"};
@@ -1050,6 +1051,7 @@ function showAltitude() {
   var m = E.showMenu({ "" : {title:/*LANG*/"Altitude",back:() => {
       Bangle.setBarometerPower(0,"settings");
       Bangle.removeListener("pressure",onPressure);
+      E.removeListener("kill",altitudeDone);
       altitudeDone();
       popMenu(systemMenu());
     }},