riched20: Do not destroy IRichEditOle if still referenced

[Guillaume Charifi]

Fixes https://bugs.winehq.org/show_bug.cgi?id=37563
Fixes https://bugs.winehq.org/show_bug.cgi?id=37565 (in fact the bugs are the same)

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 dlls/riched20/editor.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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