Patches for the Win32 code: using right icon sizes as a default icon and bugfix for a bug with window resizing

SDL Development
1

Hello.

I have created these patches:
https://bugzilla.libsdl.org/show_bug.cgi?id=3405
https://bugzilla.libsdl.org/show_bug.cgi?id=3404#c3

Do I have to do something else? If it needs more detailed explanation why
these changes are needed and useful, ask me :)–
Best regards, Evgeny