email plugin: Fix a segfault in the shutdown routine.

It was only caused when run in DS-only-mode.

diff --git a/src/email.c b/src/email.c
index eed91f1..7738a39 100644 (file)
--- a/src/email.c
+++ b/src/email.c
@@ -190,7 +190,7 @@ static conn_list_t conns;
 static pthread_cond_t collector_available = PTHREAD_COND_INITIALIZER;
 
 /* collector threads */
-static collector_t **collectors;
+static collector_t **collectors = NULL;
 
 static pthread_mutex_t available_mutex = PTHREAD_MUTEX_INITIALIZER;
 static int available_collectors;
@@ -724,9 +724,6 @@ static int email_shutdown (void)
 {
        int i = 0;
 
-       if (disabled)
-               return (0);
-
        if (connector != ((pthread_t) 0)) {
                pthread_kill (connector, SIGTERM);
                connector = (pthread_t) 0;
@@ -740,21 +737,27 @@ static int email_shutdown (void)
        /* don't allow any more connections to be processed */
        pthread_mutex_lock (&conns_mutex);
 
-       for (i = 0; i < max_conns; ++i) {
-               if (collectors[i]->thread != ((pthread_t) 0)) {
-                       pthread_kill (collectors[i]->thread, SIGTERM);
-                       collectors[i]->thread = (pthread_t) 0;
-               }
-               
-               if (collectors[i]->socket >= 0) {
-                       close (collectors[i]->socket);
-                       collectors[i]->socket = -1;
+       if (collectors != NULL) {
+               for (i = 0; i < max_conns; ++i) {
+                       if (collectors[i] == NULL)
+                               continue;
+
+                       if (collectors[i]->thread != ((pthread_t) 0)) {
+                               pthread_kill (collectors[i]->thread, SIGTERM);
+                               collectors[i]->thread = (pthread_t) 0;
+                       }
+
+                       if (collectors[i]->socket >= 0) {
+                               close (collectors[i]->socket);
+                               collectors[i]->socket = -1;
+                       }
                }
-       }
+       } /* if (collectors != NULL) */
 
        pthread_mutex_unlock (&conns_mutex);
 
        unlink (SOCK_PATH);
+       errno = 0;
 
        return (0);
 } /* static void email_shutdown (void) */