Use curve functions from native module

app/sql.js

@@ -1160,9 +1160,11 @@ async function initialize({ configDir, key, messages }) {
 
   filePath = join(dbDir, 'db.sqlite');
 
+  let promisified;
+
   try {
     const sqlInstance = await openDatabase(filePath);
-    const promisified = promisify(sqlInstance);
+    promisified = promisify(sqlInstance);
 
     // promisified.on('trace', async statement => {
     //   if (!db || statement.startsWith('--')) {
@@ -1177,16 +1179,18 @@ async function initialize({ configDir, key, messages }) {
 
     await updateSchema(promisified);
 
-    db = promisified;
-
     // test database
 
-    const result = await getSQLIntegrityCheck(db);
+    const result = await getSQLIntegrityCheck(promisified);
     if (result) {
       console.log('Database integrity check failed:', result);
       throw new Error(`Integrity check failed: ${result}`);
     }
 
+    // At this point we can allow general access to the database
+    db = promisified;
+
+    // test database
     await getMessageCount();
   } catch (error) {
     console.log('Database startup error:', error.stack);
@@ -1207,7 +1211,9 @@ async function initialize({ configDir, key, messages }) {
         `Database startup error:\n\n${redactAll(error.stack)}`
       );
     } else {
-      await close();
+      if (promisified) {
+        await promisified.close();
+      }
       await removeDB();
       removeUserConfig();
       app.relaunch();