hornet: Fix some issues with addition of ptrace support

1) Fix check_ptrace macro to stringify the "req" argument in error message
2) Set lo & hi so that pickaddr() will print reasonable range with "-v"
3) Replace NULL with empty string in verbose print
4) Remove unused "pagesize" variable.

Signed-off-by: Jin Wen <wenx.jin@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
1 file changed