Fix passcode issues by updating the UI to validated state in -[VLCAppDelegate validatePasscode] when no passcode is set. Be more defensive about -[VLCKeychainCoordinate validatePasscode] calls when a passcode was never set => nil.

Signed-off-by: Felix Paul Kühne <fkuehne@videolan.org>

NEWS

@@ -3,6 +3,7 @@
 * Improved SMB compatibility
 * UPnP reliability improvements, notably with Kodi
 * Stability improvements
+* Fixed issues unlocking the app when a passcode was never set
 
 2.7.0:
 ------

Sources/VLCAppDelegate.m

@@ -438,8 +438,10 @@ didFailToContinueUserActivityWithType:(NSString *)userActivityType
         [[VLCPlayerDisplayController sharedInstance] dismissPlaybackView];
 
         [keychainCoordinator validatePasscode];
-    } else
+    } else {
         _passcodeValidated = YES;
+        [self passcodeValidated];
+    }
 }
 
 #pragma mark - download handling

Sources/VLCKeychainCoordinator.m

@@ -115,7 +115,7 @@ NSString *const VLCPasscode = @"org.videolan.vlc-ios.passcode";
     _inValidation = YES;
 
     NSString *passcode = [self _obtainPasscode];
-    if ([passcode isEqualToString:@""]) {
+    if (passcode == nil || [passcode isEqualToString:@""]) {
         [[NSNotificationCenter defaultCenter] postNotificationName:VLCPasscodeValidated object:self];
     }