while runtime the error message displays like : debug error File i386\chkesp.c line 42

char *inBuffer = new char[inStreamSize];
 
        uncompressedBufferSize = inStreamSize*40;
        unCompressedBuffer = new char[uncompressedBufferSize];
 
        inFile.read (inBuffer, inStreamSize);
        //inStreamSize = inFile.gcount();

        zs = new z_stream;
        zs->next_in   = (unsigned char *)inBuffer;  //point to beginning of compressed file
        zs->avail_in  = inFile.gcount();                   //specify the size of the compressed file
        zs->next_out  = (unsigned char *)unCompressedBuffer;  //point to where the uncompressed file will be
        zs->avail_out = uncompressedBufferSize;   //specify size of buffer to hold uncompressed file
        zs->zalloc    = (alloc_func)0;
        zs->zfree     = (free_func)0;
        zs->data_type = Z_BINARY;
 
        ret = inflateInit(zs);
 

 
        ret = inflate(zs, Z_FINISH);
        if(ret != Z_OK && ret != Z_STREAM_END)
        {
            AfxMessageBox("Failed to decompress file");
             inFile.close();
             outFile.close();
            return TRUE;
        }
 
        ret = inflateEnd (zs);
 

        if(ret == Z_OK)
        {
            outFile.write (unCompressedBuffer, zs->total_out);
            m_ctrlFileProgress.StepIt();
            CreateBMPFiles(unCompressedBuffer, zs->total_out);
            m_ctrlFileProgress.StepIt();
        //  m_ctrlFileProgress.StepIt();
            CreateLogFile(unCompressedBuffer);
            m_ctrlFileProgress.StepIt();
 
        }
//cleanup:
         inFile.close();
             outFile.close();
 
        delete [] zs;
        delete[] unCompressedBuffer;
        delete[] inBuffer;
 

    }
    m_ctrlFileProgress.SetPos(4);
    SetDlgItemText(IDC_PROGRESS_TEXT, "1 File Converted");
    AfxMessageBox("Decompression Complete");
 
    return TRUE;
}