From 029cc30700233243f15bff0a940de2f587775fe9 Mon Sep 17 00:00:00 2001
From: Werner Almesberger <werner@almesberger.net>
Date: Tue, 9 Aug 2016 10:24:08 -0300
Subject: [PATCH] eeshow/diff.c: free list of highlighted areas

---
 eeshow/diff.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/eeshow/diff.c b/eeshow/diff.c
index 728198e..2eee314 100644
--- a/eeshow/diff.c
+++ b/eeshow/diff.c
@@ -261,6 +261,18 @@ static void show_areas(struct diff *diff, uint32_t *a)
 }
 
 
+static void free_areas(struct diff *diff)
+{
+	struct area *next;
+
+	while (diff->areas) {
+		next = diff->areas->next;
+		free(diff->areas);
+		diff->areas = next;
+	}
+}
+
+
 static void diff_end(void *ctx)
 {
 	struct diff *diff = ctx;
@@ -276,6 +288,7 @@ static void diff_end(void *ctx)
 
 	differences(diff, old_img, diff->new_img);
 	show_areas(diff, old_img);
+	free_areas(diff);
 
 	cro_img_write(diff->cr_ctx, diff->output_name);
 }
@@ -352,6 +365,8 @@ void diff_to_canvas(cairo_t *cr, int cx, int cy, float scale,
 	show_areas(&diff, img_old);
 	cairo_surface_mark_dirty(s);
 
+	free_areas(&diff);
+
 	cairo_set_source_surface(cr, s, 0, 0);
 	cairo_paint(cr);