PATCH: avoid problem with deleting nameref features in modules

The old code fixes the specific case of zmodload -u zsh/ksh93 but:
% zmodload zsh/ksh93
% echo ${.sh.version}
zsh-5.9.0.3-test-319-g21367ac
% zmodload -F zsh/ksh93 -p:.sh.version
zsh/ksh93: parameter `.sh.version' already deleted
% echo $ZSH_PATCHLEVEL
zsh-5.9.0.3-test-319-g21367ac

This output is pretty confusing until you realize what's going on.
(Which is that deleteparamdef checks if (searchpm == d->pm), fails
because it followed a nameref, and then doesn't delete anything).

By using getnode2 instead, we avoid the problem at the source.
---

I know that nameref stuff is up in the air at the moment, but is there any reason not
to do this?

 Src/Modules/ksh93.c | 8 --------
 Src/module.c        | 2 +-
 2 files changed, 1 insertion(+), 9 deletions(-)

diff --git a/Src/Modules/ksh93.c b/Src/Modules/ksh93.c
index 159a4fe7cf..e70c20d715 100644
--- a/Src/Modules/ksh93.c
+++ b/Src/Modules/ksh93.c
@@ -270,14 +270,6 @@ cleanup_(Module m)
 
     deletewrapper(m, wrapper);
 
-    /* Clean up namerefs, otherwise deleteparamdef() is confused */
-    for (p = partab; p < partab + sizeof(partab)/sizeof(*partab); ++p) {
-	if (p->flags & PM_NAMEREF) {
-	    HashNode hn = gethashnode2(paramtab, p->name);
-	    if (hn)
-		((Param)hn)->node.flags &= ~PM_NAMEREF;
-	}
-    }
     return setfeatureenables(m, &module_features, NULL);
 }
 
diff --git a/Src/module.c b/Src/module.c
index 5652a123ee..83a518c442 100644
--- a/Src/module.c
+++ b/Src/module.c
@@ -1127,7 +1127,7 @@ addparamdef(Paramdef d)
 int
 deleteparamdef(Paramdef d)
 {
-    Param pm = (Param) paramtab->getnode(paramtab, d->name);
+    Param pm = (Param) paramtab->getnode2(paramtab, d->name);
 
     if (!pm)
 	return 1;
-- 
2.38.1