Explicitly cast 'size_t' to 'uint16_t' to avoid data loss warnings

[boulabiar]

I have implicit loss conversion warning on windows. (I treat warnings as errors)
Please replace line 13691:

per_methods_[method].trie.add(rule, per_methods_[method].rules.size() - 1, BP_index != INVALID_BP_ID ? blueprints[BP_index]->prefix().length() : 0, BP_index);

by

per_methods_[method].trie.add(rule, static_cast<uint16_t>(per_methods_[method].rules.size() - 1), BP_index != INVALID_BP_ID ? static_cast<uint16_t>(blueprints[BP_index]->prefix().length()) : 0, BP_index);

[gittiver]

Please provide a PullRequest if you want to have that change, I will not search it in sources.

[boulabiar]

Created pull request
#1114

[gittiver]

closed by PR #1118