syslog plugin: constify

diff --git a/src/syslog.c b/src/syslog.c
index 3f73178..849f7d1 100644 (file)
--- a/src/syslog.c
+++ b/src/syslog.c
@@ -90,7 +90,7 @@ static int sl_notification (const notification_t *n,
        char  buf[1024] = "";
        size_t offset = 0;
        int log_severity;
-       char *severity_string;
+       const char *severity_string;
        int status;
 
        if (n->severity > notif_severity)