fail on blank string

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@6533 d0543943-73ff-0310-b7d9-9358b9ac24b2

diff --git a/src/mod/endpoints/mod_portaudio/mod_portaudio.c b/src/mod/endpoints/mod_portaudio/mod_portaudio.c
index 413ddd07653aec511cfc076f02a84de0a97f4906..b21d91df4248c30e5b36e512fe7924058f8e992f 100644 (file)
--- a/src/mod/endpoints/mod_portaudio/mod_portaudio.c
+++ b/src/mod/endpoints/mod_portaudio/mod_portaudio.c
@@ -1556,7 +1556,7 @@ static switch_status_t place_call(char **argv, int argc, switch_stream_handle_t
        switch_status_t status = SWITCH_STATUS_SUCCESS;
        char *dest = NULL;
 
-       if (!argv[0]) {
+       if (switch_strlen_zero(argv[0])) {
                stream->write_function(stream, "FAIL:Usage: call <dest>\n");
                return SWITCH_STATUS_SUCCESS;
        }