Fix a few missed cases with MPROBE and friends.

This commit was SVN r26116.

ompi/mpi/c/improbe.c

@@ -64,6 +64,7 @@ int MPI_Improbe(int source, int tag, MPI_Comm comm, int *flag,
             );
             *message = &ompi_message_no_proc.message;
         }
+        *flag = 1;
         return MPI_SUCCESS;
     }
 

ompi/mpi/c/imrecv.c

@@ -59,6 +59,7 @@ int MPI_Imrecv(void *buf, int count, MPI_Datatype type,
 
     if (&ompi_message_no_proc.message == *message) {
         *request = &ompi_request_empty;
+        *message = MPI_MESSAGE_NULL;
         return MPI_SUCCESS;
      }
 

ompi/mpi/c/mrecv.c

@@ -59,6 +59,7 @@ int MPI_Mrecv(void *buf, int count, MPI_Datatype type,
 
     if (&ompi_message_no_proc.message == *message) {
         *status = ompi_request_empty.req_status;
+        *message = MPI_MESSAGE_NULL;
         return MPI_SUCCESS;
      }