CORE-1898 correct signature as a quick fix.

Author: echo-branch

src/ios/BranchSDK.m

@@ -796,7 +796,7 @@ - (void)lastAttributedTouchData:(CDVInvokedUrlCommand *)command {
   NSMutableDictionary *json = [NSMutableDictionary new];
 
   Branch *branch = [self getInstance];
-  [branch lastAttributedTouchDataWithAttributionWindow:30 completion:^(BranchLastAttributedTouchData * _Nullable latd) {
+  [branch lastAttributedTouchDataWithAttributionWindow:30 completion:^(BranchLastAttributedTouchData * _Nullable latd, NSError * _Nullable error) {
     CDVPluginResult* pluginResult = nil;
     if (latd) {
       [json setObject:latd.attributionWindow forKey:@"attribution_window"];