SRSUE: fix srsue_rf_test

lib/include/srslte/radio/radio_multi.h

@@ -126,7 +126,16 @@ public:
   {
     radios.at(radio_idx)->set_rx_srate(srate);
   }
-  srslte_rf_info_t* get_info(const uint32_t& radio_idx) override { return radios.at(radio_idx)->get_info(); }
+  srslte_rf_info_t* get_info(const uint32_t& radio_idx) override
+  {
+    srslte_rf_info_t* ret = nullptr;
+
+    if (radio_idx < radios.size()) {
+      ret = radios.at(radio_idx)->get_info();
+    }
+
+    return ret;
+  }
 
 protected:
   rf_args_t args = {};

srsue/src/phy/sync.cc

@@ -718,11 +718,15 @@ void sync::set_agc_enable(bool enable)
   if (enable) {
     if (running && radio_h) {
       srslte_rf_info_t* rf_info = radio_h->get_info(0);
-      srslte_ue_sync_start_agc(
-          &ue_sync, callback_set_rx_gain, rf_info->min_rx_gain, rf_info->max_rx_gain, radio_h->get_rx_gain(0));
-      search_p.set_agc_enable(true);
+      if (rf_info) {
+        srslte_ue_sync_start_agc(
+            &ue_sync, callback_set_rx_gain, rf_info->min_rx_gain, rf_info->max_rx_gain, radio_h->get_rx_gain(0));
+        search_p.set_agc_enable(true);
+      } else {
+        ERROR("Error: Radio does not provide RF information\n");
+      }
     } else {
-      ERROR("Error setting AGC: PHY not initiatec\n");
+      ERROR("Error setting AGC: PHY not initiated\n");
     }
   } else {
     ERROR("Error stopping AGC: not implemented\n");