Remove unneeded test. "info" cannot be NULL here as it was dereferenced
previously. Spotted by Coverity's checker.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13255 a5019735-40e9-0310-863c-91ae7b9d1cf9
Remove pointless test. vts->ts is an array and cannot be NULL.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13256 a5019735-40e9-0310-863c-91ae7b9d1cf9
Fix NULL dereference if no integer arg given to monitor block_list cmd
Reported by Florian (spotted by coverity).


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13257 a5019735-40e9-0310-863c-91ae7b9d1cf9