$NetBSD: patch-sandbox.subr.in,v 1.1 2019/09/20 22:31:30 maya Exp $

Don't use tar -e on netbsd. It's not supported by libarchive tar,
the default since NetBSD 9.x.

--- sandbox.subr.in.orig	2019-01-14 02:17:11.000000000 +0000
+++ sandbox.subr.in
@@ -366,19 +366,12 @@ sandbox_extract() {
         *) shtk_cli_error "Cannot determine compression format for ${file}"
     esac
 
-    local tar_extra_flags=
-    case "$(uname -s)" in
-        NetBSD)
-            tar_extra_flags=e  # Stop on first error.
-            ;;
-    esac
-
     if shtk_cli_log_level debug && which progress >/dev/null 2>&1 \
         && [ "${format}" = z ]; then
-        progress -zf "${file}" tar "-${tar_extra_flags}xp" -C "${dir}" \
+        progress -zf "${file}" tar "-xp" -C "${dir}" \
             -f - "${@}"  || shtk_cli_error "Extraction of ${file} failed"
     else
-        tar "-${tar_extra_flags}x${format}p" -f "${file}" -C "${dir}" "${@}" \
+        tar "-x${format}p" -f "${file}" -C "${dir}" "${@}" \
             || shtk_cli_error "Extraction of ${file} failed"
     fi
 }