Reported by, you guessed it, Coverity.

Signed-off-by: Johannes Schindelin <redacted>
---
 builtin/fast-export.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/builtin/fast-export.c b/builtin/fast-export.c
index e0220630d00..828d41c0c11 100644
--- a/builtin/fast-export.c
+++ b/builtin/fast-export.c

@@ -765,6 +765,7 @@ static void handle_tag(const char *name, struct tag *tag)
 	       (int)(tagger_end - tagger), tagger,
 	       tagger == tagger_end ? "" : "\n",
 	       (int)message_size, (int)message_size, message ? message : "");
+	free(buf);
 }

 static struct commit *get_commit(struct rev_cmdline_entry *e, char *full_name)