REVIEWED: GuiScrollPanel(), allow configurable border, using LISTVIEW property

src/raygui.h

@@ -1923,7 +1923,7 @@ int GuiScrollPanel(Rectangle bounds, const char *text, Rectangle content, Vector
     }
 
     // Draw scrollbar lines depending on current state
-    GuiDrawRectangle(bounds, GuiGetStyle(DEFAULT, BORDER_WIDTH), GetColor(GuiGetStyle(LISTVIEW, BORDER + (state*3))), BLANK);
+    GuiDrawRectangle(bounds, GuiGetStyle(LISTVIEW, BORDER_WIDTH), GetColor(GuiGetStyle(LISTVIEW, BORDER + (state*3))), BLANK);
 
     // Set scrollbar slider size back to the way it was before
     GuiSetStyle(SCROLLBAR, SCROLL_SLIDER_SIZE, slider);