zone: fix a recent memory leak

diff --git a/src/knot/zone/zone-dump.c b/src/knot/zone/zone-dump.c
index bca23cccd9742a27478a979dd9fbc9dc54c4775f..c002b38ebc8f02659a0ed802fd1b0011548b21f9 100644 (file)
--- a/src/knot/zone/zone-dump.c
+++ b/src/knot/zone/zone-dump.c
@@ -157,6 +157,7 @@ int zone_dump_text(zone_contents_t *zone, zone_skip_t *skip, FILE *file, bool co
 
        if (comments) {
                if (fprintf(file, ";; Zone dump (Knot DNS %s)\n", PACKAGE_VERSION) < 0) {
+                       free(buf);
                        return knot_map_errno();
                }
        }