tunit_attack: draw a line between unit stats

data/gui/default/window/unit_attack.cfg

@@ -163,10 +163,31 @@
 		[/column]
 
 		[column]
+			border = "all"
+			border_size = 10
+			vertical_grow = true
 
-			[spacer]
-				width = 10
-			[/spacer]
+			[drawing]
+				definition = "default"
+
+				width = 1
+				height = (height)
+
+				[draw]
+
+					[line]
+						x1 = 0
+						y1 = 1
+						x2 = 0
+						y2 = (height - 1)
+
+						color = {GUI__FONT_COLOR_DISABLED__DEFAULT}
+						thickness = 1
+					[/line]
+
+				[/draw]
+
+			[/drawing]
 
 		[/column]