package/pulseaudio: fix build without avahi-client

Fix the following build failure without avahi-client raised since commit
7752afbe4bb9fa1def5ba89daf21564ea58af79a (before this commit, avahi was
silently disabled):

../output-1/build/pulseaudio-16.1/meson.build:754:2: ERROR: Dependency "avahi-client" not found, tried pkgconfig and cmake

Fixes:
 - http://autobuild.buildroot.org/results/0aea014eb4ed27870af908668d7b138d150f065a

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 63e33bf88dd2138c4caa3dbfd5e1d89518ddd398)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/pulseaudio/pulseaudio.mk

@@ -25,7 +25,7 @@ PULSEAUDIO_DEPENDENCIES = \
 
 PULSEAUDIO_LDFLAGS = $(TARGET_LDFLAGS) $(TARGET_NLS_LIBS)
 
-ifeq ($(BR2_PACKAGE_AVAHI_DAEMON),y)
+ifeq ($(BR2_PACKAGE_AVAHI_LIBAVAHI_CLIENT),y)
 PULSEAUDIO_CONF_OPTS += -Davahi=enabled
 PULSEAUDIO_DEPENDENCIES += avahi
 else