sbin/hammer2: Fix compile warning on Linux distros
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cmd_debug.c: In function 'show_bref':
cmd_debug.c:812: warning: pointer targets in passing argument 2 of 'CountFreeBlocks' differ in signedness
cmd_debug.c:42: note: expected 'hammer2_off_t *' but argument is of type 'int64_t *'
cmd_debug.c:812: warning: pointer targets in passing argument 3 of 'CountFreeBlocks' differ in signedness
cmd_debug.c:42: note: expected 'hammer2_off_t *' but argument is of type 'int64_t *'
cmd_debug.c: In function 'cmd_hash':
cmd_debug.c:890: warning: pointer targets in passing argument 1 of 'dirhash' differ in signedness
UnifiedSplitRaw