Allow whitespace at the start of non-wrapped trailers

Sometimes folks indent their trailers with whitespace, so relax the
rules to recognize this situation. In theory, this shouldn't introduce
false-positives.

Suggested-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211214214327.4003631-1-robh@kernel.org
Signed-off-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
1 file changed