select/guard: fixed bashism

This closes bug #105, as well as #530094 on bugs.debian.org.

Signed-off-by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>

guilt-guard

@@ -12,12 +12,12 @@ print_guards()
 	echo "$1: $guards"
 }
 
-if [ "$1" == "-l" ] || [ "$1" == "--list" ]; then
+if [ "$1" = "-l" -o "$1" = "--list" ]; then
 	get_full_series | while read patch; do
 		print_guards "$patch"
 	done
 	exit 0
-elif [ "$1" == "-n" ] || [ "$1" == "--none" ]; then
+elif [ "$1" = "-n" -o "$1" = "--none" ]; then
 	patch="$2"
 	if [ -z "$patch" ]; then
 		patch=`get_top`

guilt-select

@@ -16,7 +16,7 @@ select_guards()
 	echo "$@" | sed -e 's/ /\n/g' | sort | uniq > "$guards_file"
 }
 
-if [ $# == 0 ]; then
+if [ $# -eq 0 ]; then
 	if [ -s "$guards_file" ]; then
 		cat "$guards_file"
 	else