Vito wouldnt have cared if an "innocent hooker" (oxymoron) was killed. The Corleones needed Geary on thier side, and were willing to do what it took to get him there, whiether it was Vito or Michael who was in charge. Vito didnt object to the killing of an innocent horse, did he?
If winners never lose, well, then a loser sure can sing the blues.
