in_forward: clear out_tag before using(#4670)

Signed-off-by: Takahiro Yamashita <[email protected]>
fluent · Jan 24, 2022 · db194f7 · db194f7
1 parent d5f2c65
commit db194f7
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/plugins/in_forward/fw_prot.c b/plugins/in_forward/fw_prot.c
@@ -381,6 +381,7 @@ int fw_prot_process(struct fw_conn *conn)
             stag_len = tag.via.str.size;
 
             /* Copy the tag to the new buffer, prefix it if required */
+            flb_sds_len_set(out_tag, 0); /* clear out_tag before using */
             if (ctx->tag_prefix) {
                 flb_sds_cat_safe(&out_tag,
                                  ctx->tag_prefix, flb_sds_len(ctx->tag_prefix));