exit 0, but warn if gencode is not executable

Signed-off-by: Nico Schottelius <nico@kr.ethz.ch>

bin/cdist-object-codegen

@@ -51,8 +51,13 @@ cat << eof
 
 eof
 
-[ -x "$gencode" ] && __cdist_exec_fail_on_error "$gencode" "$__cdist_object_id"
+if [ -x "$gencode" ]; then
+   __cdist_exec_fail_on_error "$gencode" "$__cdist_object_id"
+else
+   if [ -f "$gencode" ]; then
+      echo "$gencode" exists, but is not executable >&2
+   fi
 
-# Ensure non-error exit status
+   # No gencode? also fine! Ensure we exit 0
    exit 0
-
+fi