Temporary fix for handling a user denying access for oauth

AFOAuth1Client.podspec

@@ -1,11 +1,11 @@
 Pod::Spec.new do |s|
   s.name         = "AFOAuth1Client"
-  s.version      = "0.3.2"
+  s.version      = "0.3.21"
   s.summary      = "AFNetworking Extension for OAuth 1.0a Authentication."
   s.homepage     = "https://github.com/AFNetworking/AFOAuth1Client"
   s.license      = 'MIT'
   s.author       = { 'Mattt Thompson' => 'm@mattt.me' }
-  s.source       = { :git => "https://github.com/AFNetworking/AFOAuth1Client.git", :tag => '0.3.2' }
+  s.source       = { :git => "git@github.com:mikekey/AFOAuth1Client.git", :tag => '0.3.21' }
   s.source_files = 'AFOAuth1Client'
   s.requires_arc = true
 
@@ -15,7 +15,7 @@ Pod::Spec.new do |s|
   s.osx.deployment_target = '10.7'
   s.osx.frameworks = 'CoreServices', 'SystemConfiguration', 'Security'
 
-  s.dependency 'AFNetworking', '~> 1.3'
+  s.dependency 'AFNetworking', '~> 1.3.0'
 
   s.prefix_header_contents = <<-EOS
 #import <Availability.h>

AFOAuth1Client/AFOAuth1Client.m

@@ -285,6 +285,10 @@ - (void)authorizeUsingOAuthWithRequestTokenPath:(NSString *)requestTokenPath
 
             currentRequestToken.verifier = [AFParametersFromQueryString([url query]) valueForKey:@"oauth_verifier"];
 
+            if (currentRequestToken.verifier == nil) {
+                failure([NSError errorWithDomain:@"Oauth Authorization" code:401 userInfo:@{@"Access Denied":@"User denied access"}]);
+                return;
+            }
             [self acquireOAuthAccessTokenWithPath:accessTokenPath requestToken:currentRequestToken accessMethod:accessMethod success:^(AFOAuth1Token * accessToken, id responseObject) {
                 self.applicationLaunchNotificationObserver = nil;
                 if (accessToken) {