libopensc: uncomplete changes in c48afdbf breaks windows builds

src/libopensc/reader-ctapi.c

@@ -303,7 +303,7 @@ static struct sc_reader_driver ctapi_drv = {
 	"CT-API module",
 	"ctapi",
 	&ctapi_ops,
-	0, 0, NULL
+	NULL
 };
 
 static struct ctapi_module * add_module(struct ctapi_global_private_data *gpriv,

src/libopensc/reader-openct.c

@@ -46,7 +46,7 @@ static struct sc_reader_driver openct_reader_driver = {
 	"OpenCT reader",
 	"openct",
 	&openct_ops,
-	0, 0, NULL
+	NULL
 };
 
 /* private data structures */

src/libopensc/reader-pcsc.c

@@ -2093,7 +2093,7 @@ static struct sc_reader_driver cardmod_drv = {
 	"PC/SC cardmod reader",
 	"cardmod",
 	&cardmod_ops,
-	0, 0, NULL
+	NULL
 };
 
 static int cardmod_init(sc_context_t *ctx)