qrexec: do not exit from qrexec-client until local process exit code is sent

qrexec/qrexec-client.c

@@ -293,11 +293,11 @@ static void handle_input(libvchan_t *vchan)
                     /* if this is "remote" service end and no real local process
                      * exists (using own stdin/out) send also fake exit code */
                     send_exit_code(vchan, 0);
-                }
                     do_exit(0);
                 }
             }
         }
+    }
     if (!write_vchan_all(vchan, buf, ret)) {
         if (!libvchan_is_open(vchan)) {
             // agent disconnected its end of socket, so no future data will be