util/lint/checkpatch.pl: Fix "uninitialized value" error message

Change-Id: I74807f240779060158c6769f63a6e9438a6e5fbe
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64173
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@tutanota.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/util/lint/checkpatch.pl b/util/lint/checkpatch.pl
index a7a31db144..6d2d1dd011 100755
--- a/util/lint/checkpatch.pl
+++ b/util/lint/checkpatch.pl
@@ -845,7 +845,7 @@ sub read_words {
 				next;
 			}
 
-			$$wordsRef .= '|' if ($$wordsRef ne "");
+			$$wordsRef .= '|' if (defined $$wordsRef);
 			$$wordsRef .= $line;
 		}
 		close($file);