fix(rtsp): fix RTSP timeout after quitting an app (#3376)

* fix(rtsp): fix RTSP timeout after quitting an app

* fix(process): ignore failures when terminating the process group

src/process.cpp

@@ -87,7 +87,8 @@ namespace proc {
 
       // We always call terminate() even if we waited successfully for all processes above.
       // This ensures the process group state is consistent with the OS in boost.
-      group.terminate();
+      std::error_code ec;
+      group.terminate(ec);
       group.detach();
     }
 

src/rtsp.cpp

@@ -588,10 +588,6 @@ namespace rtsp_stream {
           i++;
         }
       }
-
-      if (all && !ios.stopped()) {
-        ios.stop();
-      }
     }
 
     /**