WebSearch: fix (U(1) OR SL(2,Z)) test case (err)
- Erratum: the commit reference in the previous commit message (in 238ec4d0ba64cdfcc061bd70adcca4ed87700967) should have been 7b3804d29a49dd86a64eedba9714795244286653, not e60cddb60a0949fc3c7c811a0d5a815a9c06d717.