FilePeeker: Warning cleanup.
The return type of getopt() is int. It cannot be portably assigned to a char. Fixes warning seen in aarch64 build.
Clean up some old warning suppressions that are no longer needed.
The return type of getopt() is int. It cannot be portably assigned to a char. Fixes warning seen in aarch64 build.
Clean up some old warning suppressions that are no longer needed.