Move init failure code to die_init() (formerly die())

src/make.skel

 #!/bin/bash
-#shellcheck disable=SC2034,SC1090
+#shellcheck disable=SC2034
 # mkit - simple install helper
 # See LICENSE file for copyright and license details.
 
-die() {
+init_core() {
     #
-    # Poor man's die() (mkit.sh has better)
+    # Load core module (or die)
     #
-    echo "$@" >&2 && exit 9
+    #shellcheck disable=SC1090
+    . "$MKIT_DIR/include/mkit.sh" \
+     && return 0
+    echo "failed to load core; check if MKIT_DIR is set properly: $MKIT_DIR" >&2
+    exit 9
 }
 
 
 MKIT_VERSION=__MKIT_PROJ_VERSION__
 
 
-. "$MKIT_DIR/include/mkit.sh" || die "failed to init; check if MKIT_DIR is set properly: $MKIT_DIR"
+init_core
 
 case "$1" in
     --version-semver) echo "$MKIT_VERSION"; exit 0 ;;