mpd: bump to version 0.19.4

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/mpd/mpd.hash

@@ -1,2 +1,2 @@
 # Locally calculated after checking pgp signature
-sha256	fee3f3c59b5806767f23f7962621be7a62d4fcb852fff6b9ed6bbb5598a556d3	mpd-0.19.3.tar.xz
+sha256	18f4af89e8b9a434da2b8678b53fc8189da97c1f32e9083512d67217166d3bd8	mpd-0.19.4.tar.xz

package/mpd/mpd.mk

@@ -5,7 +5,7 @@
 ################################################################################
 
 MPD_VERSION_MAJOR = 0.19
-MPD_VERSION = $(MPD_VERSION_MAJOR).3
+MPD_VERSION = $(MPD_VERSION_MAJOR).4
 MPD_SOURCE = mpd-$(MPD_VERSION).tar.xz
 MPD_SITE = http://www.musicpd.org/download/mpd/$(MPD_VERSION_MAJOR)
 MPD_DEPENDENCIES = host-pkgconf boost libglib2