Fix a crash during python init

Threadstate is not available and causes abort to be called.
Also change how we set python home, saw some init errors because
environment variable wasn't picked up.

Author: Paxxi

project/BuildDependencies/scripts/0_package.target-win10-arm.list

@@ -34,7 +34,7 @@ openssl-1.1.1d-win10-arm-v141-20200105.7z
 pcre-8.43-win10-arm-v141-20200105.7z
 pillow-6.2.1-win10-arm-v142-20200803.7z
 pycryptodome-3.9.4-win10-arm-v142-20200803.7z
-python-3.8.5-win10-arm-v142-20200803.7z
+python-3.8.5-win10-arm-v142-20201205.7z
 rapidjson-1.1.0-20200105.7z
 spdlog-1.5.0-win10-arm-v141-20200320-2.7z
 sqlite-3300100-win10-arm-v141-20200105.7z

project/BuildDependencies/scripts/0_package.target-win10-win32.list

@@ -34,7 +34,7 @@ openssl-1.1.1d-win10-win32-v141-20200105.7z
 pcre-8.43-win10-win32-v141-20200105.7z
 pillow-6.2.1-win10-win32-v142-20200803.7z
 pycryptodome-3.9.4-win10-win32-v142-20200803.7z
-python-3.8.5-win10-win32-v142-20200803.7z
+python-3.8.5-win10-win32-v142-20201205.7z
 rapidjson-1.1.0-20200105.7z
 spdlog-1.5.0-win10-win32-v141-20200320-2.7z
 sqlite-3300100-win10-win32-v141-20200105.7z

project/BuildDependencies/scripts/0_package.target-win10-x64.list

@@ -34,7 +34,7 @@ openssl-1.1.1d-win10-x64-v141-20200105.7z
 pcre-8.43-win10-x64-v141-20200105.7z
 pillow-6.2.1-win10-x64-v142-20200803.7z
 pycryptodome-3.9.4-win10-x64-v142-20200803.7z
-python-3.8.5-win10-x64-v142-20200803.7z
+python-3.8.5-win10-x64-v142-20201205.7z
 rapidjson-1.1.0-20200105.7z
 spdlog-1.5.0-win10-x64-v141-20200320.7z
 sqlite-3300100-win10-x64-v141-20200105.7z

project/BuildDependencies/scripts/0_package.target-win32.list

@@ -41,7 +41,7 @@ openssl-1.1.1d-win10-win32-v141-20200105.7z
 pcre-8.43-win32-v141-20200105.7z
 pillow-6.2.1-win32-v142-20200803.7z
 pycryptodome-3.9.4-win32-v142-20200803.7z
-python-3.8.5-win32-v142-20200803.7z
+python-3.8.5-win32-v142-20201205.7z
 rapidjson-1.1.0-20200105.7z
 shairplay-ce80e00-win32-v141-20200105.7z
 spdlog-1.5.0-win32-v141-20200320-2.7z

project/BuildDependencies/scripts/0_package.target-x64.list

@@ -38,7 +38,7 @@ openssl-1.1.1d-x64-v141-20200105.7z
 pcre-8.43-x64-v141-20200105.7z
 pillow-6.2.1-x64-v142-20200803.7z
 pycryptodome-3.9.4-x64-v142-20200803.7z
-python-3.8.5-x64-v142-20200803.7z
+python-3.8.5-x64-v142-20201205.7z
 rapidjson-1.1.0-20200105.7z
 shairplay-ce80e00-x64-v141-20200105.7z
 spdlog-1.5.0-x64-v141-20200320.7z

xbmc/interfaces/python/XBPython.cpp

@@ -28,6 +28,7 @@
 #include "utils/JSONVariantWriter.h"
 #include "utils/Variant.h"
 #include "utils/log.h"
+#include "utils/CharsetConverter.h"
 
 #ifdef TARGET_WINDOWS
 #include "platform/Environment.h"
@@ -501,10 +502,14 @@ bool XBPython::OnScriptInitialized(ILanguageInvoker* invoker)
     CEnvironment::putenv(buf);
     buf = "PYTHONOPTIMIZE=1";
     CEnvironment::putenv(buf);
-    buf = "PYTHONHOME=" + CSpecialProtocol::TranslatePath("special://xbmc/system/python");
-    CEnvironment::putenv(buf);
     buf = "OS=win32";
     CEnvironment::putenv(buf);
+
+    std::wstring pythonHomeW;
+    CCharsetConverter::utf8ToW(CSpecialProtocol::TranslatePath("special://xbmc/system/python"),
+                           pythonHomeW);
+    Py_SetPythonHome(pythonHomeW.c_str());
+
 #ifdef _DEBUG
     if (CSysInfo::GetWindowsDeviceFamily() == CSysInfo::Xbox)
       CEnvironment::putenv("PYTHONCASEOK=1");