message: fix use of uninit field
diff: @@ -157,7 +157,7 @@ struct TVLegacyPass final : public llvm::ModulePass {
  bool onlyif_src_exists = false; // Verify this pair only if src exists
  const function<llvm::TargetLibraryInfo*(llvm::Function&)> *TLI_override
  = nullptr;
  - unsigned anon_count;
  + unsigned anon_count = 0;
  TVLegacyPass() : ModulePass(ID) {}
  