gfio: correctly input stored FIO_OPT_STR_STORE options

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/goptions.c b/goptions.c
index 9b6fca6..98a05fa 100644
--- a/goptions.c
+++ b/goptions.c
@@ -287,7 +287,7 @@
 	case FIO_OPT_STR_STORE: {
 		char *text = NULL;
 
-		if (o->off1 && !o->cb) {
+		if (o->off1) {
 			char **p = td_var(to, o->off1);
 			text = *p;
 		}