mlindfors
4c1919c6ec
Fix an NPE caused by the previous fix to Grid's frozen columns (#11444)
* Fix an NPE caused by the previous fix to Grid's frozen columns (#10653)
If the user managed to get two frozen column count changes into a single server round-trip before the component had been attached, the previous fix #11346 lead to a null pointer exception since there was no diff state available.
This fix adds a null check before removing the frozen column count value from the diff state so that this will not happen.
Closes #10653