Fix call to broken unsafe_type_of in apply tactic.
Fix call to broken unsafe_type_of in apply tactic.

This broke the build of iris-coq in the EConstr branch. Each time you
use unsafe_type_of, I loose a night of sleep, so please stop.

maximedenes/coq,SkySkimmer/coq,silene/coq,ppedrot/coq,Lionel-Rieg/coq,coq/coq,Zimmi48/coq,ppedrot/coq,william-lawvere/coq,letouzey/coq-wip,SkySkimmer/coq,Zimmi48/coq,letouzey/coq-wip,maximedenes/coq,ppedrot/coq,silene/coq,Lionel-Rieg/coq,gares/coq,ejgallego/coq,ppedrot/coq,maximedenes/coq,JasonGross/coq,letouzey/coq-wip,coq/coq,SkySkimmer/coq,SkySkimmer/coq,gares/coq,coq/coq,amintimany/coq,Lionel-Rieg/coq,JasonGross/coq,Matafou/coq,ejgallego/coq,Zimmi48/coq,amintimany/coq,ppedrot/coq,silene/coq,JasonGross/coq,ejgallego/coq,gares/coq,coq/coq,Zimmi48/coq,letouzey/coq-wip,Matafou/coq,ejgallego/coq,JasonGross/coq,gares/coq,william-lawvere/coq,amintimany/coq,william-lawvere/coq,gares/coq,maximedenes/coq,Matafou/coq,maximedenes/coq,letouzey/coq-wip