cleanup visionipc when recovering from fault in dmonitoringd and loggerd (#1402)

selfdrive/loggerd/loggerd.cc

@@ -168,6 +168,7 @@ void encoder_thread(bool is_streaming, bool raw_clips, bool front) {
       VIPCBuf* buf = visionstream_get(&stream, &extra);
       if (buf == NULL) {
         LOG("visionstream get failed");
+        visionstream_destroy(&stream);
         break;
       }
 

selfdrive/modeld/dmonitoringmodeld.cc

@@ -55,6 +55,7 @@ int main(int argc, char **argv) {
       buf = visionstream_get(&stream, &extra);
       if (buf == NULL) {
         printf("visionstream get failed\n");
+        visionstream_destroy(&stream);
         break;
       }
       //printf("frame_id: %d %dx%d\n", extra.frame_id, buf_info.width, buf_info.height);