package/solarus: disable tests

Set -DSOLARUS_TESTS=OFF to disable tests (option added in version 1.6.1
with:
https://gitlab.com/solarus-games/solarus/commit/1829189c6050e36086b12c3806932e8657265467)

Reviewed-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/solarus/solarus.mk

@@ -20,7 +20,9 @@ SOLARUS_DEPENDENCIES = libgl libmodplug libogg libvorbis openal physfs sdl2 \
 	sdl2_image sdl2_ttf
 
 # Disable launcher GUI (requires Qt5)
-SOLARUS_CONF_OPTS = -DSOLARUS_GUI=OFF
+SOLARUS_CONF_OPTS = \
+	-DSOLARUS_GUI=OFF \
+	-DSOLARUS_TESTS=OFF
 
 ifeq ($(BR2_PACKAGE_LUAJIT),y)
 SOLARUS_CONF_OPTS += -DSOLARUS_USE_LUAJIT=ON