Explicitly remove messages.db journal

Fixes #7636

src/org/thoughtcrime/securesms/DatabaseUpgradeActivity.java

@@ -77,6 +77,7 @@ public class DatabaseUpgradeActivity extends BaseActivity {
   public static final int INTERNALIZE_CONTACTS                 = 317;
   public static final int SQLCIPHER                            = 334;
   public static final int SQLCIPHER_COMPLETE                   = 352;
+  public static final int REMOVE_JOURNAL                       = 353;
 
   private static final SortedSet<Integer> UPGRADE_VERSIONS = new TreeSet<Integer>() {{
     add(NO_MORE_KEY_EXCHANGE_PREFIX_VERSION);
@@ -284,6 +285,11 @@ public class DatabaseUpgradeActivity extends BaseActivity {
         if (file != null && file.exists()) file.delete();
       }
 
+      if (params[0] < REMOVE_JOURNAL) {
+        File file = context.getDatabasePath("messages.db-journal");
+        if (file != null && file.exists()) file.delete();
+      }
+
       return null;
     }