use POSIX -eq rather than bash == #1360

diff --git a/extra/config/lxdialog/check-lxdialog.sh b/extra/config/lxdialog/check-lxdialog.sh
index 120d624..df81c44 100755 (executable)
--- a/extra/config/lxdialog/check-lxdialog.sh
+++ b/extra/config/lxdialog/check-lxdialog.sh
@@ -57,7 +57,7 @@ usage() {
        printf "Usage: $0 [-check compiler options|-header|-library]\n"
 }
 
-if [ $# == 0 ]; then
+if [ $# -eq 0 ]; then
        usage
        exit 1
 fi