Fix format warnings in tviced/state_analyzer.c

Fix format warnings in tviced/state_analyzer.c

state_analyzer.c assumes subtracting two char*s will result in an
unsigned int, which can cause warnings. Lacking a portable format
specifier, just use %ld and cast to long.

Reviewed-on: http://gerrit.openafs.org/681
Tested-by: Derrick Brashear <shadow@dementia.org>
Reviewed-by: Derrick Brashear <shadow@dementia.org>