imagemagick: bump to version 6.9.0-6

Signed-off-by: Fabio Porcedda <Fabio.Porcedda@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/imagemagick/imagemagick.hash

@@ -1,2 +1,2 @@
 # From ftp://ftp.nluug.nl/pub/ImageMagick/digest.rdf
-sha256 56e3ba52ef0a0c0bc25b34a435312d0ee2aa22f43ba74801ab3888b37b21871e  ImageMagick-6.9.0-5.tar.xz
+sha256 a47f2731d453df502a93036ca1fea44c5852ed1b2c36af4343e6afb18652fefd ImageMagick-6.9.0-6.tar.xz

package/imagemagick/imagemagick.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-IMAGEMAGICK_VERSION = 6.9.0-5
+IMAGEMAGICK_VERSION = 6.9.0-6
 IMAGEMAGICK_SOURCE = ImageMagick-$(IMAGEMAGICK_VERSION).tar.xz
 # The official ImageMagick site only keeps the latest versions
 # available, which is annoying. Use an alternate site that keeps all