BUG: Slickedit should delete P4DIFF variable before doing a Perforce diff

[timur]

I have P4DIFF=meld set in my global system environment (Ubuntu 18).  When I do a Diffzilla diff between my current files and the workspace, Diffzilla comes up just fine.  But if I save changes to my file and then close Diffzilla, a second later Meld is launched with the same diff.  This doesn't happen if P4DIFF is unset when Slickedit is launched.

[Dan]

I'll have to look into this.