mysql: host-mysql depends on host-zlib

Fixes:

 http://autobuild.buildroot.org/results/ffe/ffe8229f869a67e84c1eacec0055cce8b1906441/

[Thomas: add autobuilder reference.]

Signed-off-by: Marcelo Gutiérrez <kuyurix@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/mysql/mysql.mk

@@ -43,7 +43,7 @@ endif
 
 ifeq ($(BR2_PACKAGE_MYSQL_SERVER),y)
 MYSQL_DEPENDENCIES += host-mysql host-bison
-HOST_MYSQL_DEPENDENCIES =
+HOST_MYSQL_DEPENDENCIES = host-zlib
 
 HOST_MYSQL_CONF_OPT = \
 	--with-embedded-server \