From NetBSD:

From NetBSD:
- parser.c: Fix prompting in old style backquote expansion. Fixes PR/2139
	    and many user complaints why the shell hangs in echo "`"
- eval.c:   Fix exitstatus invalid resetting in `if' statements were:
		if (exit 3); then
			echo foo $?
		else
			echo bar $?
		fi
	    printed 'bar 0' instead of bar 3
	    Return zero status if `else' clause is empty.