Merge pull request #1 from kivikakk/ios-first-launch-bug

Fix exception on first run when there is no Cookie header.

Author: Psykar

RNCookieManagerIOS/RNCookieManagerIOS.m

@@ -42,7 +42,11 @@ @implementation RNCookieManagerIOS
 RCT_EXPORT_METHOD(get:(NSURL *)url callback:(RCTResponseSenderBlock)callback) {
   NSArray *cookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookiesForURL:url];
     NSDictionary *headers = [NSHTTPCookie requestHeaderFieldsWithCookies:cookies];
-    callback(@[headers[@"Cookie"], @"success"]);
+    if ([headers objectForKey:@"Cookie"] == nil) {
+        callback(@[[NSNull null], @"success"]);
+    } else {
+        callback(@[headers[@"Cookie"], @"success"]);
+    }
 }
 
 RCT_EXPORT_METHOD(clearAll:(RCTResponseSenderBlock)callback) {