silence complaining compiler

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@9741 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/switch_time.c

@@ -542,7 +542,7 @@ SWITCH_DECLARE(switch_status_t) switch_strftime_tz(const char *tz, const char *f
 
 	switch_size_t retsize;
 
-	struct tm tm;
+	struct tm tm = { 0 };
 	switch_time_exp_t stm;
 
 	thetime = switch_timestamp_now();