Potential patches should have a commit description.  Emit a warning when
there isn't one.

[akpm@linux-foundation.org: s/else if/elsif/]
Link: http://lkml.kernel.org/r/1b099f4d8373aa583a17011992676bf0f3f09eee.camel@perches.comSigned-off-by: NJoe Perches <joe@perches.com>
Suggested-by: NPrakruthi Deepak Heragu <pheragu@codeaurora.org>
Reviewed-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>