Fix a fencepost error in ahc_find_scb that could cause us to wrongfully find an SCB still down on the card that was paged out.  This only affects error recovery.
Fix a fencepost error in ahc_find_scb that could cause us to wrongfully
find an SCB still down on the card that was paged out.  This only affects
error recovery.

Submitted by: Daniel M. Eischen <deischen@iworks.InterWorks.org>

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase