Blind fix for typo in 50972.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@50986 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/stc/PlatWX.cpp

@@ -1234,7 +1234,7 @@ void ListBoxImpl::Append(char *s, int type) {
 void ListBoxImpl::Append(const wxString& text, int type) {
     long count  = GETLB(id)->GetItemCount();
     long itemID  = GETLB(id)->InsertItem(count, wxEmptyString);
-    ling idx = -1;
+    long idx = -1;
     GETLB(id)->SetItem(itemID, 1, text);
     maxStrWidth = wxMax(maxStrWidth, text.length());
     if (type != -1) {