struct CERTCertDBHandleStr missing in NSS 3.3.x?

[Jim]

I'm trying to recompile my source code with the latest release version
of NSS 3.3.2 and NSPR 4.1.2.  I'm getting this error message during
compilation:

incomplete struct/union/enum CERTCertDBHandleStr: certDBHandle 

I'm using certDBHandle in the CERT_OpenCertDBFilename function.  I
looked at certt.h in the include directory and it includes this line:
typedef struct CERTCertDBHandleStr               CERTCertDBHandle;

However, CERTCertDBHandleStr is not defined anywhere else in this .h
or any other .h in the release.  I check the 3.3.1 and 3.3 release and
they don't define this structure either.  In the version that we are
currently using (which a really old version), this is how the
structure is defined:
/*
 * Handle structure for open certificate databases
 */
struct CERTCertDBHandleStr {
    DB *permCertDB;
    DB *tempCertDB;
    void *spkDigestInfo;
    CERTStatusConfig *statusConfig;
    PRMonitor *dbMon;
};

Is something missing out of these releases?

Thanks,
Jim