tPrint error for unknown hash - dedup - deduplicating backup program
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       ---
 (DIR) commit bdea4855d307234f96b86bf1d53515faa3ca7248
 (DIR) parent 367928d1742c6f7b12720e6c60a9292e6b708c7c
 (HTM) Author: sin <sin@2f30.org>
       Date:   Wed, 21 Mar 2018 16:10:12 +0000
       
       Print error for unknown hash
       
       Diffstat:
         M dedup.c                             |       2 ++
       
       1 file changed, 2 insertions(+), 0 deletions(-)
       ---
 (DIR) diff --git a/dedup.c b/dedup.c
       t@@ -323,6 +323,8 @@ extract(char *id, int fd)
                        free(ent);
                        break;
                }
       +        if (i == enthdr.nents)
       +                errx(1, "extract: unknown hash %s", id);
        }
        
        void