Use correct type instead of void* in item linked list.

dlls/comctl32/comboex.c

@@ -45,9 +45,9 @@
 WINE_DEFAULT_DEBUG_CHANNEL(comboex);
 
 /* Item structure */
-typedef struct
+typedef struct _CBE_ITEMDATA
 {
-    void         *next;
+    struct _CBE_ITEMDATA *next;
     UINT         mask;
     LPWSTR       pszText;
     LPWSTR       pszTemp;
@@ -456,7 +456,7 @@ static CBE_ITEMDATA * COMBOEX_FindItem(COMBOEX_INFO *infoPtr, INT index)
 
     /* find the item in the list */
     while (item && (i > index)) {
-	item = (CBE_ITEMDATA *)item->next;
+	item = item->next;
 	i--;
     }
     if (!item || (i != index)) {
@@ -577,7 +577,7 @@ static INT COMBOEX_InsertItemW (COMBOEX_INFO *infoPtr, COMBOBOXEXITEMW *cit)
 	CBE_ITEMDATA *moving = infoPtr->items;
 
 	while ((i > index) && moving) {
-	    moving = (CBE_ITEMDATA *)moving->next;
+	    moving = moving->next;
 	    i--;
 	}
 	if (!moving) {
@@ -1250,7 +1250,7 @@ static BOOL COMBOEX_WM_DeleteItem (COMBOEX_INFO *infoPtr, DELETEITEMSTRUCT *dis)
 
 	/* find the prior item in the list */
 	while (item->next && (i > dis->itemID)) {
-	    item = (CBE_ITEMDATA *)item->next;
+	    item = item->next;
 	    i--;
 	}
 	if (!item->next || (i != dis->itemID)) {
@@ -1258,7 +1258,7 @@ static BOOL COMBOEX_WM_DeleteItem (COMBOEX_INFO *infoPtr, DELETEITEMSTRUCT *dis)
 	    return FALSE;
 	}
 	olditem = item->next;
-	item->next = (CBE_ITEMDATA *)((CBE_ITEMDATA *)item->next)->next;
+	item->next = item->next->next;
     }
     infoPtr->nb_items--;
 
@@ -1527,7 +1527,7 @@ static LRESULT COMBOEX_Destroy (COMBOEX_INFO *infoPtr)
 
 	item = infoPtr->items;
 	while (item) {
-	    next = (CBE_ITEMDATA *)item->next;
+	    next = item->next;
 	    COMBOEX_FreeText (item);
 	    Free (item);
 	    item = next;