filemq: bump git snapshot

For API compatibility with czmq version 2.2.0.

Fixes:
http://autobuild.buildroot.net/results/971/971e2f88a533cc829516b1cf426f6b1c27d0d82b/

Also, switch to github helper.

Cc: Simon Dawson <spdawson@gmail.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/filemq/filemq.mk

@@ -4,8 +4,8 @@
 #
 ################################################################################
 
-FILEMQ_VERSION = c398c096a427d341e9323d7673e6e0ca5e43902a
-FILEMQ_SITE = git://github.com/zeromq/filemq.git
+FILEMQ_VERSION = 9a24134d4c0a84abc5eebf1dfb2eb184adee72df
+FILEMQ_SITE = $(call github,zeromq,filemq,$(FILEMQ_VERSION))
 
 FILEMQ_AUTORECONF = YES
 FILEMQ_CONF_ENV = fmq_have_asciidoc=no