package/igmpproxy: bump version

Last bump dates back to April 2016, time for current git HEAD.

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/igmpproxy/igmpproxy.hash

@@ -1,2 +1,2 @@
 # Locally computed:
-sha256  2be2171cf273678810283937f7752dc9b8402456d0a03ee55f06ca52fadf075f  igmpproxy-a731683d1a65956fa05024b0597b105fe6a3a122.tar.gz
+sha256 e60331031f85d1fb834c5272a134f32d32e7834718da19ba3f787dff68389a31  igmpproxy-f47644d8fa7266a784f3ec7b251e7d318bc2f0a9.tar.gz

package/igmpproxy/igmpproxy.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-IGMPPROXY_VERSION = a731683d1a65956fa05024b0597b105fe6a3a122
+IGMPPROXY_VERSION = f47644d8fa7266a784f3ec7b251e7d318bc2f0a9
 IGMPPROXY_SITE = $(call github,pali,igmpproxy,$(IGMPPROXY_VERSION))
 IGMPPROXY_AUTORECONF = YES
 IGMPPROXY_LICENSE = GPL-2.0+