Write the strvis()'d string out to the history file in history_save(), not the original string. Fixes the bug where every second line of a history file was empty.
Write the strvis()'d string out to the history file in history_save(),
not the original string. Fixes the bug where every second line of a
history file was empty.

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