Fix a problem with device number parsing, which caused da10 to map to da1, and da11 to da2.
Fix a problem with device number parsing, which caused da10 to map to
da1, and da11 to da2.

Reported by:  Dan Nelson <dnelson@emsphone.com>

Implicitly-approved-by:	 jkh

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