Panic due to CFbsBitmap loaded in Font and bitmap server

I am using the CImageEncoder class to encode a bitmap that I load like this;
----
_LIT(KTestMBM, "Z:\\system\\Apps\\T_ItFjmmSaveImageCat1\\T_ItFjmmSaveImage.MBM");
CFbsBitmap* bitty = new (ELeave) CFbsBitmap;
bitty->Load( KTestMBM, 0, EFalse);
----

The MBM file exists and there is no problem loading the bitmap. Later on when I use the CImageEncode below there is a Panic.
----
// Load the file
    TRAPD(err, iEncoder = CImageEncoder::FileNewL( iFs, aFileName, CImageEncoder::EOptionNone, KImageTypeJPGUid ));
    if(err != KErrNone)
       {
       User::Leave(err);
       }
----

Now the reason for the Panic I understand. I am testing the application I made and am using an incorrect filename for the aFileName as the second parameter for the above FileNewL() API.

Now here is the problem that I would really appreciate help with. After the Leave in the above code the process returns to where I call FileNewL from. It is a test application and a snippet of its source was included at the top of this posting. Because of the Leave I try to release the memory that the CFbsBitmap reserves by the follwing;

bitty->Reset();
delete bitty;
bitty = NULL;

Despite this the font and bitmap server doesn't release the bitmap data and I get a Panic after the Leave. I understand that the CFbsBitmap pointer bitty is simply a handle to the data held by the font and bitmap server. I would like to know how to tell the bitmap server to release its memory since it is no longer needed. Or advice with maybe a solution where the test application and dll I am testing are in separate threads. Although I am getting out of my depth with that.

I appreciate any help you can give.