Check fclose(3) writes correctly, thanks to Bob.

1 files changed, 2 insertions, 1 deletions

diff --git a/ipv6.c b/ipv6.c
index 00d74b46..2db5816c 100644
--- a/ipv6.c
+++ b/ipv6.c
@@ -251,7 +251,8 @@ ipv6_readsecret(struct dhcpcd_ctx *ctx)
 		goto eexit;
 	x = fprintf(fp, "%s\n",
 	    hwaddr_ntoa(ctx->secret, ctx->secret_len, line, sizeof(line)));
-	fclose(fp);
+	if (fclose(fp) == EOF)
+		x = -1;
 	if (x > 0)
 		return (ssize_t)ctx->secret_len;