[FIX] web: ticking a checkbox in an x2many after onchange

This commits fixes a traceback that appears when ticking a checkbox in
an x2many which triggers an onchange. The root cause of the issue is
twofold:

- confirmUpdate requires currentFieldIndex to be defined, but might be
  needed when setting currentFieldIndex;
- confirmUpdate attempts to restore the selection range even if we are
  not dealing with a char field (e.g. checkbox).

We solve the issue by ensuring that _selectCell gives a temporary value
to currentFieldIndex. This value is chosen so that confirmUpdate calls
_selectCell with the right parameters. Moreover, we only restore the
selection range when the range is defined.

0 files changed, 0 insertions, 0 deletions