Revert "diff-delta.c: allow delta with empty blob."

[git.git] / diff-delta.c

diff --git a/diff-delta.c b/diff-delta.c
index cf50138..b2ae7b5 100644 (file)
--- a/diff-delta.c
+++ b/diff-delta.c
@@ -213,7 +213,7 @@ void *diff_delta(void *from_buf, unsigned long from_size,
        bdrecord_t *brec;
        bdfile_t bdf;
 
-       if (delta_prepare(from_buf, from_size, &bdf))
+       if (!from_size || !to_size || delta_prepare(from_buf, from_size, &bdf))
                return NULL;
        
        outpos = 0;