fix switch_ivr_collect_digits_callback to allow an args pointer with null callback...

diff --git a/src/switch_ivr.c b/src/switch_ivr.c
index 3d2a79c0184de49e0f972d881f808a7a1a8ea7eb..246b18ea4c7e10ffb0968fc0f57c8ab8b4ed7c1e 100644 (file)
--- a/src/switch_ivr.c
+++ b/src/switch_ivr.c
@@ -876,7 +876,7 @@ SWITCH_DECLARE(switch_status_t) switch_ivr_collect_digits_callback(switch_core_s
        switch_time_t abs_started = 0, digit_started = 0;
        uint32_t abs_elapsed = 0, digit_elapsed = 0;
 
-       if (!args || !args->input_callback) {
+       if (!args) {
                return SWITCH_STATUS_GENERR;
        }
 
@@ -917,6 +917,10 @@ SWITCH_DECLARE(switch_status_t) switch_ivr_collect_digits_callback(switch_core_s
 
 
                if (switch_channel_has_dtmf(channel)) {
+                       if (!args->input_callback && !args->buf) {
+                               status = SWITCH_STATUS_BREAK;
+                               break;
+                       }
                        switch_channel_dequeue_dtmf(channel, &dtmf);
                        status = args->input_callback(session, (void *) &dtmf, SWITCH_INPUT_TYPE_DTMF, args->buf, args->buflen);
                        if (digit_timeout) {