NPE in SyntaxView.viewToModel

[ovna01]

Description
In SyntaxView method viewToModel, the call to getTokenListForLine may return null and the following usage of the returned tokenList an NullPointerException. (line 975 and 977).

Steps to Reproduce
We have got NPE in some cases, but have no way (yet) to reproduce this.

Expected behavior
No NPE

Actual behavior
NPE may occur

Java version
Java 17

Additional context
Possible solution - add a null check before calling tokenList.getListOffset