Make mysqlc conditional on MARIADBC, too

Change-Id: I7e8541b8918ea5011fe9669d11b51c941544f794
Reviewed-on: https://gerrit.libreoffice.org/68764
Tested-by: Jenkins
Reviewed-by: Tor Lillqvist <tml@collabora.com>

Repository.mk

@@ -405,7 +405,7 @@ $(eval $(call gb_Helper_register_libraries_for_install,OOOLIBS,ooo, \
 	$(call gb_Helper_optional,SCRIPTING,msforms) \
 	mtfrenderer \
 	$(call gb_Helper_optional,DBCONNECTIVITY,mysql_jdbc) \
-	$(call gb_Helper_optional,DBCONNECTIVITY,mysqlc) \
+	$(call gb_Helper_optional,MARIADBC,$(call gb_Helper_optional,DBCONNECTIVITY,mysqlc)) \
 	numbertext \
 	odbc \
 	odfflatxml \