Fix return value for pjsua_set_snd_dev2() with no sound device option (…

…#3809)

* Fix return value for pjsua_set_snd_dev2() with no sound device option

* Move initialization

* modification based on comments

pjsip/src/pjsua-lib/pjsua_aud.c

@@ -2228,7 +2228,7 @@ PJ_DEF(pj_status_t) pjsua_set_snd_dev2(const pjsua_snd_dev_param *snd_param)
     unsigned alt_cr_cnt = 1;
     unsigned alt_cr[] = {0, 44100, 48000, 32000, 16000, 8000};
     unsigned i;
-    pj_status_t status = -1;
+    pj_status_t status = PJ_SUCCESS;
     unsigned orig_snd_dev_mode = pjsua_var.snd_mode;
 
     PJ_ASSERT_RETURN(snd_param, PJ_EINVAL);
@@ -2267,7 +2267,8 @@ PJ_DEF(pj_status_t) pjsua_set_snd_dev2(const pjsua_snd_dev_param *snd_param)
         PJSUA_UNLOCK();
         PJ_LOG(4, (THIS_FILE, "No sound device, mode setting is ignored"));
         if (!pjsua_var.no_snd)
-            pjsua_set_no_snd_dev();
+            PJ_ASSERT_RETURN(pjsua_set_no_snd_dev(), PJ_ENOTFOUND);
+
         pj_log_pop_indent();
         return status;
     }