Assert string number is not -2

src/openrct2/interface/widget.c

@@ -456,8 +456,10 @@ static void widget_text(rct_drawpixelinfo *dpi, rct_window *w, rct_widgetindex w
     sint32 t = w->y + widget->top;
     sint32 r = w->x + widget->right;
 
-    // TODO: -2 seems odd
-    if (widget->text == (rct_string_id)-2 || widget->text == STR_NONE)
+    // TODO: Remove after 15 January 2018 if no issues are reported
+    assert(widget->text != (rct_string_id)-2);
+
+    if (widget->text == STR_NONE)
         return;
 
     if (widget_is_disabled(w, widgetIndex))