db: Fix tab/space issue with previous commit

Replace spaces with tabs in previous commit.  There are no functional
changes in this commit.

Fixes: 1a8730c ("db: propagate notify_used when merging filter collections")
Signed-off-by: Tom Hromatka <tom.hromatka@oracle.com>
(cherry picked from commit 4b0bf50)

Author: drakenclimber

src/db.c

@@ -1259,9 +1259,9 @@ int db_col_merge(struct db_filter_col *col_dst, struct db_filter_col *col_src)
 	/* reset the precompute */
 	db_col_precompute_reset(col_dst);
 
-    /* propagate NOTIFY usage so NEW_LISTENER is requested on load */
-    if (col_src->notify_used)
-        col_dst->notify_used = true;
+	/* propagate NOTIFY usage so NEW_LISTENER is requested on load */
+	if (col_src->notify_used)
+		col_dst->notify_used = true;
 
 	/* free the source */
 	col_src->filter_cnt = 0;