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login: fix potential null pointer dereference
[elogind.git]
/
src
/
login
/
logind-user.c
diff --git
a/src/login/logind-user.c
b/src/login/logind-user.c
index c0b473930db0bf71e69861de2e60ec5b552c2a39..a9cf529e12a049899e46a10f32f99a584b3bad4a 100644
(file)
--- a/
src/login/logind-user.c
+++ b/
src/login/logind-user.c
@@
-763,6
+763,9
@@
static int elect_display_compare(Session *s1, Session *s2) {
* is preferred.
*
* s1 or s2 may be NULL. */
+ if (!s1 && !s2)
+ return 0;
+
if ((s1 == NULL) != (s2 == NULL))
return (s1 == NULL) - (s2 == NULL);