Issue 346: GUI’s show indexed types shows Index query error when index is running

If the fact that the indexing is being carried out is indeed the source of the problem, it would be helpful were the error message to reflect that.

I can reproduce this, will take a look at it.

Fixed by https://bitbucket.org/medoc/recoll/commits/bc6e532ec11e7908aa52fc2c2a2d0bc439297bc5