package/libminiupnpc: disable sample and tests

Disable sample and tests (which are built by default since version 2.1:
https://github.com/miniupnp/miniupnp/commit/530b2723500c4a708546815f5593b5c819ab5f76)

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit e1d0ac062cd65794a39e90b5f7abae354aa69be9)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libminiupnpc/libminiupnpc.mk

@@ -16,5 +16,6 @@ LIBMINIUPNPC_CPE_ID_VENDOR = miniupnp_project
 LIBMINIUPNPC_CPE_ID_PRODUCT = miniupnpc
 LIBMINIUPNPC_CPE_ID_VERSION = $(LIBMINIUPNPC_VERSION_MAJOR)
 LIBMINIUPNPC_CPE_ID_UPDATE = $(LIBMINIUPNPC_VERSION_MINOR)
+LIBMINIUPNPC_CONF_OPTS = -DUPNPC_BUILD_SAMPLE=OFF -DUPNPC_BUILD_TESTS=OFF
 
 $(eval $(cmake-package))