Fix bugs (#7060)

* fix bugs

paddle/framework/executor.cc

@@ -102,7 +102,7 @@ void Executor::Run(const ProgramDesc& pdesc, Scope* scope, int block_id,
     VLOG(3) << op->DebugString();
     op->Run(*local_scope, place_);
   }
-  if (create_local_scope) {
+  if (create_vars && create_local_scope) {
     scope->DeleteScope(local_scope);
   }
 }

paddle/operators/send_op.cc

@@ -79,7 +79,7 @@ class SendOpMaker : public framework::OpProtoAndCheckerMaker {
     AddComment(R"DOC(
 Recv operator
 
-This operator will recv tensor from send_op
+This operator will send tensor to recv_op.
 )DOC");
     AddAttr<std::vector<std::string>>("endpoints",
                                       "(string vector, default 127.0.0.1:6164)"