Snippets for antlr 4.13.2 from Alpine ppc64le

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-ppc64le/testing/libantlr4/libantlr4-4.13.2-r0.log.

• /home/buildozer/aports/testing/libantlr4/src/runtime/src/Vocabulary.cpp:12:18: warning: 'antlr4::dfa::Vocabulary::EMPTY_VOCABULARY' is deprecated: Use the default constructor of Vocabulary instead. [-Wdeprecated-declarations]
     12 | const Vocabulary Vocabulary::EMPTY_VOCABULARY;
        |                  ^~~~~~~~~~
  

• /home/buildozer/aports/testing/libantlr4/src/runtime/src/tree/xpath/XPathLexer.cpp:158:48: warning: unused parameter 'context' [-Wunused-parameter]
    158 | void XPathLexer::IDAction(antlr4::RuleContext *context, size_t actionIndex) {
        |                           ~~~~~~~~~~~~~~~~~~~~~^~~~~~~