[Bug 37759] GetStringTypeW: Access violation when src param is null

https://bugs.winehq.org/show_bug.cgi?id=37759

christian faure  changed:

What    |Removed                     |Added
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  Attachment #50297|0                           |1
        is obsolete|                            |

--- Comment #6 from christian faure  ---
Created attachment 50300
  --> https://bugs.winehq.org/attachment.cgi?id=50300
[1/1] kernel32: Fix GetStringTypeW when src param is null

Replace previous patch, replace tabs by spaces and include proposed changes for
test suite