IOSS: Do not use default case in switch if possible #2316

Job	Run time
build-deps (gnu, V114, 4.9.2, 4.4.0)	2m 3s
build-deps (clang, V114, 4.9.2, 4.4.0)	41s
build-deps (mpi, V114, 4.9.2, 4.4.0)	1m 55s
Debug serial build	5m 58s
Debug parallel build	6m 31s
Threadsafe ON, No Fortran	3m 56s
Threadsafe ON, Parallel, No Fortran	5m 58s
Sanitize address, no fortran	6m 41s
Sanitize undefined	7m 9s
Sanitize integer	6m 15s
GTest Enabled	7m 17s
No applications, legacy, or fortran	5m 25s
CATALYST2, parallel	9m 47s
KOKKOS, parallel	8m 12s
No deprecated exodus functions	7m 51s
Use modern CMake configure of netCDF and HDF5 packages with GTest	8m 21s
ADIOS2 enabled	12m 46s
FAODEL and METIS enabled	14m 18s
C++20 build serial clang	9m 9s
C++20 build serial gnu	9m 10s
C++20 build parallel	10m 38s
	2h 30m 1s

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