close client before returning

runtime/rpc_server.hpp

@@ -126,7 +126,6 @@ public:
             if (err < 0) {
                 return Err { .msg = std::format("could not bind ({})", err) };
             };
-            return Unit {};
         }
         {
             auto err = ::listen(socket, 0);
@@ -168,6 +167,7 @@ public:
                         auto msg = std::format(
                             "error parsing rpc message: '{}' @ {}:{}\n",
                             err.msg, err.pos.line, err.pos.col);
+                        close(client);
                         return Err {
                             .msg = msg,
                         };