Fix a bug introduced in rev.1.40 which can cause systems to crash when detaching USB devices.  Specifically, a variable which was not meant to be reused was, in fact, being reused.
Fix a bug introduced in rev.1.40 which can cause systems to crash when
detaching USB devices.  Specifically, a variable which was not meant
to be reused was, in fact, being reused.

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