message: elle.log: remove an assert that does trigger on C-c
  Of course this is not the right fix, but it's what we had for quite a
  while.
  See
diff: @@ -350,7 +350,6 @@ namespace elle
  if (auto i = elle::find(this->_component_levels, name))
  res = i->second;
  else
  - {
  for (auto const& filter: this->_component_patterns)
  if (filter.match(name))
  {
  @@ -362,7 +361,6 @@ namespace elle
  // $ELLE_LOG_LEVEL="LOG,DUMP"), keep the last one.
  this->_component_levels[name] = res;
  }
  - }
  return res;
  }
  @@ -381,7 +379,8 @@ namespace elle
  Logger::component_pop()
  {
  std::lock_guard<std::recursive_mutex> lock(_mutex);
  - assert(!this->_component_stack.empty());
  + // FIXME: make this an assert.
  + if (!this->_component_stack.empty())
  this->_component_stack.pop_back();
  }
  