INFO_TABLE_RET should generate a CmmRetInfoLabel, not a CmmInfoLabel

Fixes this, when building unregisterised:

rts/dist/build/AutoApply.hc:87:1:
     error: ‘stg_ap_v_entry’ undeclared (first use in this function)

compiler/cmm/CmmParse.y

@@ -482,7 +482,7 @@ info    :: { CmmParse (CLabel, Maybe CmmInfoTable, [LocalReg]) }
                    do let prof = NoProfilingInfo
                           rep  = mkRTSRep (fromIntegral $5) $ mkStackRep []
                       return (mkCmmRetLabel pkg $3,
-                              Just $ CmmInfoTable { cit_lbl = mkCmmInfoLabel pkg $3
+                              Just $ CmmInfoTable { cit_lbl = mkCmmRetInfoLabel pkg $3
                                            , cit_rep = rep
                                            , cit_prof = prof, cit_srt = NoC_SRT },
                               []) }
@@ -497,7 +497,7 @@ info    :: { CmmParse (CLabel, Maybe CmmInfoTable, [LocalReg]) }
                           bitmap = mkLiveness dflags (map Just (drop 1 live))
                           rep  = mkRTSRep (fromIntegral $5) $ mkStackRep bitmap
                       return (mkCmmRetLabel pkg $3,
-                              Just $ CmmInfoTable { cit_lbl = mkCmmInfoLabel pkg $3
+                              Just $ CmmInfoTable { cit_lbl = mkCmmRetInfoLabel pkg $3
                                            , cit_rep = rep
                                            , cit_prof = prof, cit_srt = NoC_SRT },
                               live) }