Invalidate the tag_files.tfd after fclose(3)ing the stram associated

with it.  In main() assert that the tfd was actually invalidated.
This avoids closing an invalid fd.
From tb@; OK deraadt@ on an earlier version.

1 files changed, 3 insertions, 0 deletions

diff --git a/tag.c b/tag.c
index b57df552..5862db63 100644
--- a/tag.c
+++ b/tag.c
@@ -213,6 +213,9 @@ tag_write(void)
 	ohash_delete(&tag_data);
 	if (stream != NULL)
 		fclose(stream);
+	else
+		close(tag_files.tfd);
+	tag_files.tfd = -1;
 }
 
 void