main: pass argc by reference so cmd_argc is kept up-to-date with cmd_argv
main: pass argc by reference so cmd_argc is kept up-to-date with cmd_argv

Signed-off-by: Peter Gadfort <7a938094a14a6d7745b59a60224c4a3a5eb6a3d8@army.mil>

The-OpenROAD-Project/OpenROAD,The-OpenROAD-Project/OpenROAD,QuantamHD/OpenROAD,QuantamHD/OpenROAD,QuantamHD/OpenROAD,The-OpenROAD-Project/OpenROAD,QuantamHD/OpenROAD,The-OpenROAD-Project/OpenROAD,The-OpenROAD-Project/OpenROAD,QuantamHD/OpenROAD