change ack ordering

Author: shikokuchuo

DESCRIPTION

@@ -1,7 +1,7 @@
 Package: nanonext
 Type: Package
 Title: NNG (Nanomsg Next Gen) Lightweight Messaging Library
-Version: 0.10.2.9021
+Version: 0.10.2.9022
 Description: R binding for NNG (Nanomsg Next Gen), a successor to ZeroMQ. NNG is
     a socket library implementing 'Scalability Protocols', a reliable,
     high-performance standard for common communications patterns including

NEWS.md

@@ -1,4 +1,4 @@
-# nanonext 0.10.2.9021 (development)
+# nanonext 0.10.2.9022 (development)
 
 #### New Features
 

src/aio.c

@@ -252,10 +252,13 @@ static void raio_complete_ack(void *arg) {
   if (res == 0)
     raio->data = nng_aio_get_msg(raio->aio);
 
-  nng_msg *msg;
-
 #if NNG_MAJOR_VERSION == 1 && NNG_MINOR_VERSION < 6
 
+  nng_mtx_lock(shr_mtx);
+  raio->result = res - !res;
+  nng_mtx_unlock(shr_mtx);
+
+  nng_msg *msg;
   if (nng_msg_alloc(&msg, 0) == 0) {
     nng_aio *aio;
     if (nng_aio_alloc(&aio, NULL, NULL) == 0) {
@@ -271,17 +274,14 @@ static void raio_complete_ack(void *arg) {
     }
   }
 
-  nng_mtx_lock(shr_mtx);
-  raio->result = res - !res;
-  nng_mtx_unlock(shr_mtx);
-
 #else
 
+  raio->result = res - !res;
+  nng_msg *msg;
   if (nng_msg_alloc(&msg, 0) == 0) {
     if (nng_ctx_sendmsg(*ctx, msg, NNG_FLAG_NONBLOCK))
       nng_msg_free(msg);
   }
-  raio->result = res - !res;
 
 #endif