Set fp to NULL after fclose() to avoid a potential secondary fclose() if the

first call failed.
Fixes [a4c18d501a].

1 files changed, 1 insertions, 0 deletions

diff --git a/ipv6.c b/ipv6.c
index 16f73ad5..f7451e40 100644
--- a/ipv6.c
+++ b/ipv6.c
@@ -228,6 +228,7 @@ ipv6_readsecret(struct dhcpcd_ctx *ctx)
 	    hwaddr_ntoa(ctx->secret, ctx->secret_len, line, sizeof(line)));
 	if (fclose(fp) == EOF)
 		x = -1;
+	fp = NULL;
 	if (x > 0)
 		return (ssize_t)ctx->secret_len;