# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1540940357 -3600
# Node ID 876b75c4dbc15e22132a1ea27b8644a759a8ff20
# Parent  b5c583edf1c296b3d9ace2d9fded90485329516d
Tidied up some repetition in expressions.

diff -r b5c583edf1c2 -r 876b75c4dbc1 lib/vga_display.c
--- a/lib/vga_display.c	Tue Oct 30 20:19:45 2018 +0100
+++ b/lib/vga_display.c	Tue Oct 30 23:59:17 2018 +0100
@@ -257,16 +257,18 @@
 
 void visible_active(void)
 {
-    if (vga_display.line < vga_display.display_config->vfp_start)
+    display_config_t *cfg = vga_display.display_config;
+
+    if (vga_display.line < cfg->vfp_start)
     {
         /* Update the line address and handle wraparound. */
 
-        if (!(vga_display.line % vga_display.display_config->line_multiplier))
+        if (!(vga_display.line % cfg->line_multiplier))
         {
-            vga_display.linedata += vga_display.display_config->line_length;
+            vga_display.linedata += cfg->line_length;
 
-            if (vga_display.linedata >= vga_display.display_config->screen_limit)
-                vga_display.linedata -= vga_display.display_config->screen_size;
+            if (vga_display.linedata >= cfg->screen_limit)
+                vga_display.linedata -= cfg->screen_size;
         }
 
         update_visible();