genapply: Explicitly specify arguments

We seem to not be feeding either live registers or the arguments when
generating the fast call in genapply.  This results in strange signature
missmatches between the callee (expecting no registers) and the call
site, expecting to pass registers.

Test Plan: validate

Reviewers: bgamari, simonmar, austin

Reviewed By: simonmar

Subscribers: rwbarton, thomie

Differential Revision: https://phabricator.haskell.org/D4029

utils/genapply/Main.hs

@@ -858,7 +858,7 @@ genApplyFast regstatus args =
           nest 4 (vcat [
              text "Sp_adj" <> parens (int (-sp_offset)) <> semi,
              saveRegOffs reg_locs,
-             mkJump regstatus fun_ret_label [] [] <> semi
+             mkJump regstatus fun_ret_label [] args <> semi
           ]),
           char '}'
         ]),