notify_systemd: unset NOTIFY_SOCKET later

getenv returns a pointer, possibly to a static buffer.
If I understand the specs correctly, unsetenv is basically free
to do what it wants with this, so don't keep using the pointer
after we do unsetenv.

diff --git a/src/daemon/collectd.c b/src/daemon/collectd.c
index df238e7..fc52933 100644 (file)
--- a/src/daemon/collectd.c
+++ b/src/daemon/collectd.c
@@ -501,6 +501,7 @@ int notify_systemd (void)
         return 0;
     }
 
+    unsetenv ("NOTIFY_SOCKET");
     close(fd);
     return 1;
 }