C format fix from Jim Morris <morris@wolfman.com>

This seems to happen on newer perl versions.
It is fatal in as much as the sensors are not detected.
The solution appears to be to simply add & 0x7f to the
pack statement at line 1138 of sensors_detect...

sub outb
{
  my $towrite = pack( "C", $_[1] & 0x7f);


git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@1774 7894878c-1315-0410-8ee3-d5d059ff63e0

prog/detect/sensors-detect

@@ -1309,7 +1309,7 @@ sub inb
 # Returns: -1 on failure, 0 on success.
 sub outb
 {
-  my $towrite = pack "C", $_[1];
+  my $towrite = pack("C", $_[1] & 0x7f);
   sysseek IOPORTS, $_[0], 0 or return -1;
   my $nrchars = syswrite IOPORTS, $towrite, 1;
   return -1 if not defined $nrchars or $nrchars != 1;