restore erroneously removed toggle* casts


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@1861 35c25a1d-7b9e-4130-9fde-d3aeb78583b8
diff --git a/src/global.c b/src/global.c
index 933b7b1..e341f51 100644
--- a/src/global.c
+++ b/src/global.c
@@ -974,12 +974,12 @@
     toggle *u;
 
     if (toggles == NULL) {
-	toggles = nmalloc(sizeof(toggle));
+	toggles = (toggle *)nmalloc(sizeof(toggle));
 	u = toggles;
     } else {
 	for (u = toggles; u->next != NULL; u = u->next)
 	    ;
-	u->next = nmalloc(sizeof(toggle));
+	u->next = (toggle *)nmalloc(sizeof(toggle));
 	u = u->next;
     }