PVS-Studio warning V593 for TortoiseGIT

int git_object_lookup_bypath(....)
{
  int error = -1;
  ....
  if (
    (error = git_object_peel((git_object**)&tree,
                             treeish, GIT_OBJ_TREE) < 0) ||
    (error = git_tree_entry_bypath(&entry, tree, path)) < 0)
  {
    goto cleanup;
  }
  ....
cleanup:
  git_tree_entry_free(entry);
  git_tree_free(tree);
  return error;
}

This suspicious code was found in TortoiseGIT project by PVS-Studio static code analyzer.
Warning message is:
V593 Consider reviewing the expression of the 'A = B < C' kind. The expression is calculated as following: 'A = (B < C)'. object.c 378

PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/