dhcp: Use TEMP_FAILURE_RETRY for close
diff --git a/ell/dhcp-transport.c b/ell/dhcp-transport.c
index 758af10..4429e8e 100644
--- a/ell/dhcp-transport.c
+++ b/ell/dhcp-transport.c
@@ -139,7 +139,7 @@
 	return s;
 
 error:
-	close(s);
+	TEMP_FAILURE_RETRY(close(s));
 	return -errno;
 }