ANSIfication: remove very-old-varargs code, fix function declarations so
they include prototypes.
diff --git a/PC/WinMain.c b/PC/WinMain.c
index c3d0f2f..4249567 100644
--- a/PC/WinMain.c
+++ b/PC/WinMain.c
@@ -5,7 +5,7 @@
 
 #include "Python.h"
 
-extern int Py_Main();
+extern int Py_Main(int, char **);
 
 int WINAPI WinMain(
     HINSTANCE hInstance,      /* handle to current instance */