test-lib: unset GIT_NOTES_REF to stop it from influencing tests

diff --git a/cache.h b/cache.h
index 5abcb09fcfe8d30f87e90f390b923fc07ec8e6e3..4b15042c08afb2ba34ca6d08ebc5ca9b196ab7c8 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -1007,6 +1007,7 @@ extern int diff_auto_refresh_index;
 
 /* match-trees.c */
 void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
+void shift_tree_by(const unsigned char *, const unsigned char *, unsigned char *, const char *);
 
 /*
  * whitespace rules.