do not segfault if make_cache_entry failed

diff --git a/csum-file.h b/csum-file.h
index 72c9487f4fd9fcab5e02fc2dc6afd3cb7f9c036a..9e13342eb357d6427a208fc6777ea170eb55acb8 100644 (file)
--- a/csum-file.h
+++ b/csum-file.h
@@ -7,7 +7,7 @@ struct progress;
 struct sha1file {
        int fd;
        unsigned int offset;
-       SHA_CTX ctx;
+       git_SHA_CTX ctx;
        off_t total;
        struct progress *tp;
        const char *name;