Bug 693455 - nsMatchingRule does not work with multiple values
    
    https://bugzilla.redhat.com/show_bug.cgi?id=693455
    Resolves: bug 693455
    Bug Description: nsMatchingRule does not work with multiple values
    Reviewed by: nkinder (Thanks!)
    Branch: 389-ds-base-1.2.8
    Fix Description: The variable isFirst was not being used correctly.  Instead
    of using it, just use tmpBuf[0] to see if this is the first iteration or
    not.
    Platforms tested: RHEL6 x86_64
    Flag Day: no
    Doc impact: no
    (cherry picked from commit 58902a28c077309cf0e942bfb03762d96eb9c8af)