FIX: try to scrub string so diff does not error out

FIX: try to scrub string so diff does not error out

diff --git a/lib/discourse_code_review/github_repo.rb b/lib/discourse_code_review/github_repo.rb
index af556c0..7983bb9 100644
--- a/lib/discourse_code_review/github_repo.rb
+++ b/lib/discourse_code_review/github_repo.rb
@@ -131,7 +131,7 @@ module DiscourseCodeReview
         email = commit.author_email
         authored_at = commit.author_time
         subject = commit.summary
-        diff = commit.diff
+        diff = commit.diff.scrub
         truncated = false
 
         if diff

GitHub sha: 0928b89b