dyndbg: use keyword, arg varnames for query term pairs

optimize for clarity by replacing word[i,i+1] refs with temps.
no functional changes.

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Link: https://lore.kernel.org/r/20200921190433.1149521-3-jim.cromie@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>