checkpatch: fix another left brace warning
This patch escapes a regex that uses left brace. Using checkpatch.pl with Perl 5.22.0 generates the warning: "Unescaped left brace in regex is deprecated, passed through in regex;" Comment from regcomp.c in Perl source: "Currently we don't warn when the lbrace is at the start of a construct. This catches it in the middle of a literal string, or when it's the first thing after something like "\b"." This works as a complement to 4e5d56bd ("checkpatch: fix left brace warning"). Signed-off-by: Geyslan G. Bem <geyslan@gmail.com> Signed-off-by: Joe Perches <joe@perches.com> Suggested-by: Peter Senna Tschudin <peter.senna@gmail.com> Cc: Eddie Kovsky <ewk@edkovsky.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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