Fix bug of the SWAP is off

290,291c290,295
{swapused}/$mem->{swaptotal})*100);
{swapcached}/$mem->{swaptotal})*100);
—
> my $swapused = 0;
> my $swapcached = 0;
> if($mem->{swaptotal}>0) {
> $swapused = sprintf(“%.2f”, ($mem->{swapused}/$mem->{swaptotal})*100);
> $swapcached = sprintf(“%.2f”, ($mem->{swapcached}/$mem->{swaptotal})*100);
> }
294c298
=$mem_crit)||($swapused>=$swap_crit)) {
—
> if(($memused>=$mem_crit)||(($swapused>=$swap_crit) && ($swapused>0))) {
297c301
=$mem_warn)||($swapused>=$swap_warn)) {
—
> elsif (($memused>=$mem_warn)||(($swapused>=$swap_warn) && ($swapused>0))) {

Sorry, I do not write English well.