libxt_quota: fix _save() invert syntax

Space is misplaced.

Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
diff --git a/extensions/libxt_quota.c b/extensions/libxt_quota.c
index ff498da..ff7dd2a 100644
--- a/extensions/libxt_quota.c
+++ b/extensions/libxt_quota.c
@@ -37,7 +37,7 @@
 	const struct xt_quota_info *q = (const void *)match->data;
 
 	if (q->flags & XT_QUOTA_INVERT)
-		printf("! ");
+		printf(" !");
 	printf(" --quota %llu", (unsigned long long) q->quota);
 }