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svn:author
V 7
git2svn
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svn:date
V 27
2022-07-29T17:08:54.392695Z
K 7
svn:log
V 654
Adjust db_flush_line() definition to avoid clang 15 warning

With clang 15, the following -Werror warnings is produced:

    sys/ddb/db_lex.c:94:14: error: a function declaration without a prototype is deprecated in all versions of C [-Werror,-Wstrict-prototypes]
    db_flush_line()
                 ^
                  void

This is because db_flush_line() is declared with a (void) argument
list, but defined with an empty argument list. Make the definition match
the declaration.

MFC after:	3 days

(cherry picked from commit 939cb349b2ca4d3fcdc72ab1258eadee5e54881c)

Git Hash:   ae953161afc40f6b4df27e06f7940ea375f073ec
Git Author: dim@FreeBSD.org
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