user32: fix stale sysfont values upon locale switch

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If a prefix is created in one locale, then a program is run in it in a
different locale, most locale-dependent font settings are already reset,
yet there are a few values that aren't, namely those stored in
'HKEY_CURRENT_USER\Control Panel\Desktop\WindowMetrics' *Font keys.

This might mess up different things, as one of the fields stores
charset, which is a base for certain MultiByteToWideChar conversions.
This is the cleanest solution I could come up with.

Signed-off-by: Rafał Mużyło <[email protected]>



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--- a/dlls/user32/sysparams.c	2018-03-16 19:50:20.000000000 +0100
+++ b/dlls/user32/sysparams.c	2018-03-24 21:11:12.846567299 +0100
@@ -971,6 +971,7 @@ static BOOL get_font_entry( union syspar
             entry->font.val = font;
             break;
         }
+        entry->font.val.lfCharSet = DEFAULT_CHARSET;
         entry->hdr.loaded = TRUE;
     }
     *(LOGFONTW *)ptr_param = entry->font.val;

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Cg==

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