shithub: mc

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flush on a file without write shouldn't write.

    This caused a problem where we were trying to write to invalid
    files.

--- a/bio.myr

+++ b/bio.myr

@@ -201,8 +201,11 @@

 const flush = {f

 	var ret

-	ret = (writebuf(f.fd, f.wbuf[:f.wend]) == f.wend)

-	f.wend = 0

+	ret = true

+	if f.mode & Wr != 0

+		ret = (writebuf(f.fd, f.wbuf[:f.wend]) == f.wend)

+		f.wend = 0

+	;;

 	-> ret

 }