summarizer does not properly write temporary files to forward to disassemblers

[PlasmaHH]

When the summarizer writes data into temporary files for the disassembler, the disassembler sees 0 byte files. Adding a temp_file.flush() after the write in disassemble fixes this issue for me, at least for ndisasm

[Rigo Reddig]

Thanks for posting this. I will have a look at it.