cjson: do not build tests

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/cjson/cjson.mk

@@ -9,5 +9,7 @@ CJSON_SITE = $(call github,DaveGamble,cjson,$(CJSON_VERSION))
 CJSON_INSTALL_STAGING = YES
 CJSON_LICENSE = MIT
 CJSON_LICENSE_FILES = LICENSE
+CJSON_CONF_OPTS += \
+	-DENABLE_CJSON_TEST=OFF
 
 $(eval $(cmake-package))