Only join the snmp thread on an unload if the thread is actually running. (issue...

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@50674 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/res/res_snmp.c b/res/res_snmp.c
index 2ccadc4073f0937c30ad210966fb85c07e73ae4e..cbca08a4199605525db3f4fcf39dfdc4165b86dc 100644 (file)
--- a/res/res_snmp.c
+++ b/res/res_snmp.c
@@ -106,7 +106,7 @@ static int unload_module(void)
        ast_verbose(VERBOSE_PREFIX_1 "Unloading [Sub]Agent Module\n");
 
        res_snmp_dont_stop = 0;
-       return pthread_join(thread, NULL);
+       return ((thread != AST_PTHREADT_NULL) ? pthread_join(thread, NULL) : 0);
 }
 
 static int reload(void)