message: Force rebuild GNU hash table even though it's empty
diff: @@ -884,13 +884,11 @@ void Builder::build_symbol_gnuhash(void) {
  const std::vector<uint64_t>& filters = gnu_hash.bloom_filters();
  if (filters.size() > 0 and filters[0] == 0) {
  - VLOG(VDEBUG) << "Bloom filter is null: nothing to do!";
  - return;
  + VLOG(VDEBUG) << "Bloom filter is null";
  }
  if (shift2 == 0) {
  - VLOG(VDEBUG) << "Shift2 is null: nothing to do!";
  - return;
  + VLOG(VDEBUG) << "Shift2 is null";
  }
  VLOG(VDEBUG) << "Number of buckets " << std::dec << nb_buckets;
  