update latd method in Branch.m to handle error return

Author: jf-branch

Branch-SDK/Branch.h

@@ -1120,7 +1120,7 @@ typedef NS_ENUM(NSUInteger, BranchCreditHistoryOrder) {
  @param window attribution window in days.  If the window is 0, the server will use the server side default.  If the window is outside the server supported range, it will default to 30 days.
  @param completion callback with attribution data
  */
-- (void)lastAttributedTouchDataWithAttributionWindow:(NSInteger)window completion:(void(^) (BranchLastAttributedTouchData * _Nullable latd))completion;
+- (void)lastAttributedTouchDataWithAttributionWindow:(NSInteger)window completion:(void(^) (BranchLastAttributedTouchData * _Nullable latd, NSError * _Nullable error))completion;
 
 #pragma mark - Short Url Sync methods
 

Branch-SDK/Branch.m

@@ -1285,7 +1285,7 @@ - (void)crossPlatformIdDataWithCompletion:(void(^) (BranchCrossPlatformID * _Nul
     });
 }
 
-- (void)lastAttributedTouchDataWithAttributionWindow:(NSInteger)window completion:(void(^) (BranchLastAttributedTouchData * _Nullable latd))completion {
+- (void)lastAttributedTouchDataWithAttributionWindow:(NSInteger)window completion:(void(^) (BranchLastAttributedTouchData * _Nullable latd, NSError * _Nullable error))completion {
     [self initSafetyCheck];
     dispatch_async(self.isolationQueue, ^(){
         [BranchLastAttributedTouchData requestLastTouchAttributedData:self.serverInterface key:self.class.branchKey attributionWindow:window completion:completion];