PML/UCX/YALLA: Fix the message release call.

Set message to MPI_MESSAGE_NULL.

Signed-off-by: Alina Sklarevich <alinas@mellanox.com>

ompi/mca/pml/ucx/pml_ucx_request.h

@@ -89,7 +89,7 @@ enum {
 #define PML_UCX_MESSAGE_RELEASE(_message) \
     { \
         ompi_message_return(*(_message)); \
-        *(_message) = NULL; \
+        *(_message) = MPI_MESSAGE_NULL; \
     }
 
 

ompi/mca/pml/yalla/pml_yalla_request.h

@@ -212,7 +212,7 @@ static inline mca_pml_yalla_send_request_t* MCA_PML_YALLA_SREQ_INIT(void *_buf,
 #define PML_YALLA_MESSAGE_RELEASE(_message) \
     { \
         ompi_message_return(*(_message)); \
-        *(_message) = NULL; \
+        *(_message) = MPI_MESSAGE_NULL; \
     }
 
 #endif /* PML_YALLA_REQUEST_H_ */