libgtk3: bump version to 3.22.3

Overview of Changes in GTK+ 3.22.3:
http://ftp.gnome.org/pub/gnome/sources/gtk+/3.22/gtk+-3.22.3.news

Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/libgtk3/libgtk3.hash

@@ -1,2 +1,2 @@
-# From http://ftp.gnome.org/pub/gnome/sources/gtk+/3.22/gtk+-3.22.2.sha256sum
-sha256	2343dcaed2fc237ef718136ff4110fef7eb1ebfe178a9b064aa21cd74ecb6946	gtk+-3.22.2.tar.xz
+# From http://ftp.gnome.org/pub/gnome/sources/gtk+/3.22/gtk+-3.22.3.sha256sum
+sha256 e190ab1a9a893861b8e8be341aa57bce8b7146d6445ebfe5a8ab64236fe82ed3  gtk+-3.22.3.tar.xz

package/libgtk3/libgtk3.mk

@@ -5,7 +5,7 @@
 ################################################################################
 
 LIBGTK3_VERSION_MAJOR = 3.22
-LIBGTK3_VERSION = $(LIBGTK3_VERSION_MAJOR).2
+LIBGTK3_VERSION = $(LIBGTK3_VERSION_MAJOR).3
 LIBGTK3_SOURCE = gtk+-$(LIBGTK3_VERSION).tar.xz
 LIBGTK3_SITE = http://ftp.gnome.org/pub/gnome/sources/gtk+/$(LIBGTK3_VERSION_MAJOR)
 LIBGTK3_LICENSE = LGPLv2+