don't pass null to switch_loadable_module_get_dialplan_interface. Found by…

don't pass null to switch_loadable_module_get_dialplan_interface. Found by Klockwork (www.klocwork.com)

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@8437 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/switch_core_state_machine.c

@@ -84,6 +84,8 @@ static void switch_core_standard_on_routing(switch_core_session_t *session)
 						if ((dparg = strchr(dpname, ':'))) {
 							*dparg++ = '\0';
 						}
+					} else {
+						continue;
 					}
 					if (!(dialplan_interface = switch_loadable_module_get_dialplan_interface(dpname))) {
 						continue;