bin/check-cpu.sh in sensu-plugins-cpu-checks-0.0.3 vs bin/check-cpu.sh in sensu-plugins-cpu-checks-0.0.4

@@ -13,10 +13,10 @@
 #
 # Released under the same terms as Sensu (the MIT license); see LICENSE
 # for details.
 
 # get arguments
-while getopts 'w:c:h' OPT; do
+while getopts ':w:c:h' OPT; do
   case $OPT in
     w)  WARN=$OPTARG;;
     c)  CRIT=$OPTARG;;
     h)  hlp="yes";;
     *)  unknown="yes";;