package/zbar: fix zbar build

Fixes:
    http://autobuild.buildroot.net/results/913/913662f10330b79f7769d05493438676939d9c7e/

Signed-off-by: Viacheslav Volkov <sv99@inbox.ru>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/zbar/zbar.mk

@@ -12,6 +12,8 @@ ZBAR_LICENSE_FILES = LICENSE
 ZBAR_INSTALL_STAGING = YES
 ZBAR_AUTORECONF = YES
 ZBAR_DEPENDENCIES = libv4l jpeg
+# add host-gettext for AM_ICONV macro
+ZBAR_DEPENDENCIES += host-gettext
 ZBAR_CONF_OPTS = \
 	--without-imagemagick \
 	--without-qt \