fix: uninit values

Author: dmehala

src/datadog/baggage.cpp

@@ -130,7 +130,11 @@ void Baggage::visit(std::function<void(StringView, StringView)>&& visitor) {
 }
 
 Expected<void> Baggage::inject(DictWriter& writer, size_t max_bytes) const {
+  if (baggage_.empty()) return {};
+
+  // TODO(@dmehala): Memory alloc optimization, (re)use fixed size buffer.
   std::string res;
+  res.reserve(max_bytes);
 
   auto it = baggage_.cbegin();
   res += it->first;

src/datadog/tracer.cpp

@@ -61,7 +61,9 @@ Tracer::Tracer(const FinalizedTracerConfig& config,
       tags_header_max_size_(config.tags_header_size),
       sampling_delegation_enabled_(config.delegate_trace_sampling),
       baggage_max_items_(config.baggage_max_items),
-      baggage_max_bytes_(config.baggage_max_bytes) {
+      baggage_max_bytes_(config.baggage_max_bytes),
+      baggage_injection_enabled_(false),
+      baggage_extraction_enabled_(false) {
   if (config.report_hostname) {
     hostname_ = get_hostname();
   }