Fix memory leaks.

Signal/src/ViewControllers/AppSettings/OWSLinkedDevicesTableViewController.m

@@ -34,6 +34,8 @@ int const OWSLinkedDevicesTableViewControllerSectionAddDevice = 1;
 
 - (void)dealloc
 {
+    OWSLogVerbose(@"");
+
     [[NSNotificationCenter defaultCenter] removeObserver:self];
 }
 

Signal/src/ViewControllers/AppSettings/PrivacySettingsTableViewController.m

@@ -341,7 +341,7 @@ static NSString *const kSealedSenderInfoURL = @"https://signal.org/blog/sealed-s
                     customRowHeight:UITableViewAutomaticDimension
                     actionBlock:^{
                         NSURL *url = [NSURL URLWithString:kSealedSenderInfoURL];
-                        OWSAssertDebug(url);
+                        OWSCAssertDebug(url);
                         [UIApplication.sharedApplication openURL:url];
                     }]];
 
@@ -374,7 +374,7 @@ static NSString *const kSealedSenderInfoURL = @"https://signal.org/blog/sealed-s
                                                                @"sealed_sender_learn_more"]
                                          actionBlock:^{
                                              NSURL *url = [NSURL URLWithString:kSealedSenderInfoURL];
-                                             OWSAssertDebug(url);
+                                             OWSCAssertDebug(url);
                                              [UIApplication.sharedApplication openURL:url];
                                          }]];
     [contents addSection:unidentifiedDeliveryLearnMoreSection];