Merge branch 'maint'

* maint:
  use xmemdupz() to allocate copies of strings given by start and length
  use xcalloc() to allocate zero-initialized memory

builtin/apply.c

@@ -2867,9 +2867,7 @@ static int apply_binary_fragment(struct image *img, struct patch *patch)
 	case BINARY_LITERAL_DEFLATED:
 		clear_image(img);
 		img->len = fragment->size;
-		img->buf = xmalloc(img->len+1);
-		memcpy(img->buf, fragment->patch, img->len);
-		img->buf[img->len] = '\0';
+		img->buf = xmemdupz(fragment->patch, img->len);
 		return 0;
 	}
 	return -1;