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-rw-r--r--applypatch/imgpatch.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/applypatch/imgpatch.c b/applypatch/imgpatch.c
index af4d07281..33c448762 100644
--- a/applypatch/imgpatch.c
+++ b/applypatch/imgpatch.c
@@ -95,7 +95,7 @@ int ApplyImagePatch(const unsigned char* old_data, ssize_t old_size __unused,
printf("failed to read chunk %d raw data\n", i);
return -1;
}
- SHA_update(ctx, patch->data + pos, data_len);
+ if (ctx) SHA_update(ctx, patch->data + pos, data_len);
if (sink((unsigned char*)patch->data + pos,
data_len, token) != data_len) {
printf("failed to write chunk %d raw data\n", i);
@@ -217,7 +217,7 @@ int ApplyImagePatch(const unsigned char* old_data, ssize_t old_size __unused,
(long)have);
return -1;
}
- SHA_update(ctx, temp_data, have);
+ if (ctx) SHA_update(ctx, temp_data, have);
} while (ret != Z_STREAM_END);
deflateEnd(&strm);