Code review of fix re "internal error"

Related issue:
uBlockOrigin/uBOL-home#199

Author: gorhill

Diff for: platform/mv3/extension/js/background.js

@@ -388,15 +388,14 @@ async function start() {
 
 // https://github.com/uBlockOrigin/uBOL-home/issues/199
 // Force a restart of the extension once when an "internal error" occurs
-try {
-    start();
+start().then(( ) => {
     localWrite({ goodStart: true });
-} catch(reason) {
+}).catch(reason => {
     console.trace(reason);
-    localRead.get('goodStart').then((bin = {}) => {
-        if ( bin.goodStart !== true ) { return; }
+    localRead('goodStart').then((bin = {}) => {
+        if ( bin.goodStart === false ) { return; }
         localWrite({ goodStart: false }).then(( ) => {
             runtime.reload();
         });
     });
-}
+});