kill socket in esl_disconnect to prevent blocking

libs/esl/src/esl.c

@@ -1123,6 +1123,12 @@ ESL_DECLARE(esl_status_t) esl_disconnect(esl_handle_t *handle)
 		return ESL_FAIL;
 	}
 
+	if (handle->sock != ESL_SOCK_INVALID) {
+		closesocket(handle->sock);
+		handle->sock = ESL_SOCK_INVALID;
+		status = ESL_SUCCESS;
+	}
+
 	if (mutex) {
 		esl_mutex_lock(mutex);
 	}
@@ -1145,12 +1151,6 @@ ESL_DECLARE(esl_status_t) esl_disconnect(esl_handle_t *handle)
 	esl_event_safe_destroy(&handle->last_ievent);
 	esl_event_safe_destroy(&handle->info_event);
 
-	if (handle->sock != ESL_SOCK_INVALID) {
-		closesocket(handle->sock);
-		handle->sock = ESL_SOCK_INVALID;
-		status = ESL_SUCCESS;
-	}
-	
 	if (mutex) {
 		esl_mutex_unlock(mutex);
 		esl_mutex_lock(mutex);