Bugzilla bug 135008: fixed the bug that PL_Base64Decode may step before the buffer if the source string length is 0.  Thanks to Roger Chickering <rogc@netscape.com> for the bug fix.
Bugzilla bug 135008: fixed the bug that PL_Base64Decode may step before
the buffer if the source string length is 0.  Thanks to Roger Chickering
<rogc@netscape.com> for the bug fix.

makotokato/nsprpub,makotokato/nsprpub,makotokato/nsprpub,makotokato/nsprpub,makotokato/nsprpub