native2ascii -reverse hangs when last line includes new line mark

###@###.### 2002-01-31

When I tried to use native2ascii -reverse on Solaris9 build55
(build 1.4.0-rc-b89).
I encountered native2ascii hangs. I found that this problem occurs
when last line includes '\n' characters

sayama@oxanne[4]% cat TT
\n
sayama@oxanne[5]% cat TT_a
\n
aa
sayama@oxanne[6]% /usr/j2se/bin/native2ascii -reverse -encoding UTF-8 TT
Hang (consuming CPU near 100%)
sayama@oxanne[7]% /usr/j2se/bin/native2ascii -reverse -encoding UTF-8 TT_a
\n
aa

I can confirm that both cases work fine on S8UR7 (build 1.3.1_01).