Update the patch function

[Alexander Hanel]

It would be more efficient to add an argument to the patch function that can take the newly updated buffer. This will remove the step of

Python>test.buffer = ''
Python>test.buffer = temp
Python>test.patch()

Instead it would be

Python>test.patch(temp)

[Alexander Hanel]

Completed. Added the optional argument and first two lines of code.

    def patch(self, temp = None):
        '''patch idb with data in fwrapper.buffer'''
    if temp != None:
        self.buffer = temp
        for index, byte in enumerate(self.buffer):
             PatchByte(self.start+index, ord(byte))