MPI_ROOT: capture proc null type too

needed to get a lot of intercommunicator collectives to pass.

Signed-off-by: Howard Pritchard <[email protected]>

Author: hppritcha

ompi/mpi/bindings/ompi_bindings/consts.py

@@ -310,6 +310,7 @@
 
 RESERVED_ROOT = [
     'MPI_ROOT',
+    'MPI_PROC_NULL',
 ]
 
 RESERVED_PVAR_SESSIONS = [