Zoltan: new build warning

[jhux2]

Bug Report

I'm seeing a few warnings like the following:

[96/538] Building C object packages/zoltan/src/CMakeFiles/zoltan.dir/Utilities/Communication/comm_default.c.o
/ascldap/users/jhu/trilinos/Trilinos-trilinos-for-sake/packages/zoltan/src/Utilities/Communication/comm_default.c:62:25: warning: 'zoltan_global_mpi_lock' is static but used in inline function 'zoltan_initialize_global_comm' which is not static
   pthread_mutex_unlock(&zoltan_global_mpi_lock);
                         ^~~~~~~~~~~~~~~~~~~~~~
/ascldap/users/jhu/trilinos/Trilinos-trilinos-for-sake/packages/zoltan/src/Utilities/Communication/comm_default.c:61:3: warning: 'Zoltan_Global_MPI_Comm' is static but used in inline function 'zoltan_initialize_global_comm' which is not static
   Zoltan_Global_MPI_Comm = comm;
   ^~~~~~~~~~~~~~~~~~~~~~
/ascldap/users/jhu/trilinos/Trilinos-trilinos-for-sake/packages/zoltan/src/Utilities/Communication/comm_default.c:60:23: warning: 'zoltan_global_mpi_lock' is static but used in inline function 'zoltan_initialize_global_comm' which is not static
   pthread_mutex_lock(&zoltan_global_mpi_lock);
                       ^~~~~~~~~~~~~~~~~~~~~~

Could these be related to the recent work to eliminate MPI_COMM_WORLD?

@trilinos/zoltan
@JacobDomagala

[JacobDomagala]

Probably introduced with #12195

[stmcgovern]

I believe this issue can be closed with #PR12267 merged in.

[jhux2]

Thanks!