From e8df2aa1909c140e8a78e01b868282a63d734d49 Mon Sep 17 00:00:00 2001
From: Dirk Lemstra <dirk@git.imagemagick.org>
Date: Fri, 22 Dec 2017 02:09:45 +0100
Subject: [PATCH] Added extra check to fix issue with zero height.

---
 libvips/foreign/magicksave.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libvips/foreign/magicksave.c b/libvips/foreign/magicksave.c
index 0a843030..a9a3c8cc 100644
--- a/libvips/foreign/magicksave.c
+++ b/libvips/foreign/magicksave.c
@@ -369,6 +369,9 @@ magick_create_images( Write *write )
 		vips_image_get_int( write->im, VIPS_META_PAGE_HEIGHT, &height ) )
 		return( magick_create_image( write, write->im ) );
 
+	if( height == 0 )
+		return( magick_create_image( write, write->im ) );
+
 	for( int top=0; top < write->im->Ysize ; top+=height ) {
 		VipsImage *im;