Fix rare crash in Reader when loading posts (#24815)

Author: kean

Modules/Sources/WordPressKitObjC/ReaderPostServiceRemote.m

@@ -5,6 +5,7 @@
 #import "WPKitDateUtils.h"
 #import "NSString+Helpers.h"
 #import "WPMapFilterReduce.h"
+#import "WordPressComRestApiErrorDomain.h"
 
 @import NSObject_SafeExpectations;
 
@@ -209,6 +210,12 @@ - (void)fetchPostsFromEndpoint:(NSURL *)endpoint
                   if (!success) {
                       return;
                   }
+                  if (![responseObject isKindOfClass:[NSDictionary class]]) {
+                      if (failure) {
+                          failure([NSError errorWithDomain:WordPressComRestApiErrorDomain code:-1 userInfo:nil]);
+                      }
+                      return;
+                  }
 
                   dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_LOW, 0), ^{
                       // NOTE: Do all of this work on a background thread, then call success on the main thread.

RELEASE-NOTES.txt

@@ -1,10 +1,7 @@
-26.3
------
-
-
 26.3
 -----
 * [*] Fix an issue with Notification Settings button not working in the Reader Subscriptions context menus for subscriptions [#24778]
+* [*] Fix rare crash in Reader when loading posts [#24815]
 
 26.2
 -----