bugfix: Issue #12

[tajirhas9]

Null check operator used on a null value iamvivekkaushik/OTPTextField#12

File: lib/otp_field.dart

on line 183 and line 229

- widget.onChanged!(currentPin);

+ var onChanged = widget.onChanged;
+ if(onChanged != null) {
+   onChanged(currentPin);
+ }

on line 179 and line 225

- widget.onCompleted!(currentPin);

+ var onCompleted = widget.onCompleted;
+      if(onCompleted != null) {
+        onCompleted(currentPin);
+      }

[snkkka163]

Hello, this update is not available in the latest version 1.1.1 from pub.dev

[tajirhas9]

Yes, I created the pull request, but I guess the author is not active in this repo.