gh-109: Fix issue with getting module handle from injected dlls

[monkeyman192]

closes #109

Tested this by using the following code:

import os.path as op
import os
import subprocess
import sys
import pymem
import pymem.process

# Python version to inject
PYTHON_VERSION = "39"
PYTHON_VERSION2 = "310"

_ver = sys.version_info
running_python_version = f"{_ver.major}{_ver.minor}"

notepad = subprocess.Popen(['notepad.exe'])
pm = pymem.Pymem('notepad.exe')

# Make sure that the running version is different to the one getting injected.
assert PYTHON_VERSION != running_python_version

# This assumes that python has been installed in the "usual" location (ie. default as per the installer).
python_dll_path = op.join(op.expanduser("~"), f"AppData\\Local\\Programs\\Python\\Python{PYTHON_VERSION}\\python{PYTHON_VERSION}.dll")
python_dll_path2 = op.join(op.expanduser("~"), f"AppData\\Local\\Programs\\Python\\Python{PYTHON_VERSION2}\\python{PYTHON_VERSION2}.dll")

handle = pymem.process.inject_dll_from_path(pm.process_handle, python_dll_path)
assert handle is not None
print(handle)

handle = pymem.process.inject_dll_from_path(pm.process_handle, python_dll_path2)
assert handle is not None
print(handle)

os.kill(pm.process_id, 9)

This code was run using a python 3.13 interpreter, however it could be anything other than 3.9 or 3.10 (versions can be changed around to accommodate the running version... They just need to be different from it)

[StarrFox]

Looks good to me, thank you for your contribution!