[PATCH] checkpatch.pl: Don't complain about nominal authors if there isn't one

[Alan Stern]

checkpatch.pl shouldn't warn about a "Missing Signed-off-by: line by
nominal patch author" if there is no nominal patch author.  Without
this change, checkpatch always gives me the following warning:

        WARNING: Missing Signed-off-by: line by nominal patch author ''

Signed-off-by: Alan Stern <st...@rowland.harvard.edu>

---

 scripts/checkpatch.pl |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: usb-devel/scripts/checkpatch.pl
===================================================================
--- usb-devel.orig/scripts/checkpatch.pl
+++ usb-devel/scripts/checkpatch.pl
@@ -6673,7 +6673,7 @@ sub process {
                if ($signoff == 0) {
                        ERROR("MISSING_SIGN_OFF",
                              "Missing Signed-off-by: line(s)\n");
-               } elsif (!$authorsignoff) {
+               } elsif ($author ne '' && !$authorsignoff) {
                        WARN("NO_AUTHOR_SIGN_OFF",
                             "Missing Signed-off-by: line by nominal patch 
author '$author'\n");
                }