Reduce (some more) compile noise of 'unused variable' and 'may be used
uninitialized' warnings.
Remove compile warning "variable ‘mekeylen’ set but not used"
Remove compile warnings:
  variable ‘obj_cnt’ set but not used [-Wunused-but-set-variable]
  unused variable ‘last’ [-Wunused-variable]
  unused variable ‘j’ [-Wunused-variable]
Remove compile warning: variable ‘streamp’ set but not used [-Wunused-but-set-variable]
Remove compile warnings:
  warning: variable ‘lastch’ set but not used [-Wunused-but-set-variable]
  warning: variable ‘buf’ set but not used [-Wunused-but-set-variable]
Remove compile warning:
   warning: unused variable ‘j’ [-Wunused-variable]