Updated comments and fixed appleSearchAdDetails setter.

Author: Edward Smith

Branch-SDK/Branch-SDK/BNCPreferenceHelper.m

@@ -421,7 +421,10 @@ - (void)setInstallParams:(NSString *)installParams {
 }
 
 - (void) setAppleSearchAdDetails:(NSDictionary*)details {
-    [self writeObjectToDefaults:BRANCH_PREFS_KEY_APPLE_SEARCH_ADS_INFO value:details];
+    if (details == nil || [details isKindOfClass:[NSDictionary class]]) {
+        _appleSearchAdDetails = details;
+        [self writeObjectToDefaults:BRANCH_PREFS_KEY_APPLE_SEARCH_ADS_INFO value:details];
+    }
 }
 
 - (NSDictionary*) appleSearchAdDetails {

Branch-SDK/Branch-SDK/Branch.m

@@ -374,6 +374,8 @@ - (void)initSessionWithLaunchOptions:(NSDictionary *)options isReferrable:(BOOL)
 
             self.asyncRequestCount = 0;
 
+            // These methods will increment self.asyncRequestCount if they make an async call:
+
             // If Facebook SDK is present, call deferred app link check here which will later on call initUserSession
             [self checkFacebookAppLinks];
             // If developer opted in, call deferred apple search attribution API here which will later on call initUserSession