fix child process error propigation

$? holds the full exit status

diff --git a/IkiWiki/Setup.pm b/IkiWiki/Setup.pm
index 5b77a6471111d28a0090a769d1c3cbac804e6792..7af744f6ab18fe2bc0132891ce7c4fc3a461040f 100644 (file)
--- a/IkiWiki/Setup.pm
+++ b/IkiWiki/Setup.pm
@@ -75,7 +75,8 @@ sub dump ($) {
        }
        else {
                waitpid $pid, 0;
-               exit $? if $?;
+               exit($? >> 8) if $? >> 8;
+               exit(1) if $?;
        }
 }