[debugserver] Use class member initialization for RNBContext

Address Shafik Yaghmour's post commit code review feedback.

GitOrigin-RevId: ae8a5c68523c1d23dec721e28f89084d6561522a
diff --git a/tools/debugserver/source/RNBContext.h b/tools/debugserver/source/RNBContext.h
index 03cd7f3..562adad 100644
--- a/tools/debugserver/source/RNBContext.h
+++ b/tools/debugserver/source/RNBContext.h
@@ -43,12 +43,7 @@
     all_event_bits = sticky_event_bits | normal_event_bits
   } event_t;
   // Constructors and Destructors
-  RNBContext()
-      : m_pid(INVALID_NUB_PROCESS), m_pid_stop_count(0),
-        m_events(0, all_event_bits), m_pid_pthread(), m_launch_status(),
-        m_arg_vec(), m_env_vec(), m_detach_on_error(false),
-        m_unmask_signals(false) {}
-
+  RNBContext() = default;
   virtual ~RNBContext();
 
   nub_process_t ProcessID() const { return m_pid; }
@@ -132,24 +127,26 @@
 
 protected:
   // Classes that inherit from RNBContext can see and modify these
-  nub_process_t m_pid;
+  nub_process_t m_pid = INVALID_NUB_PROCESS;
   std::string m_stdin;
   std::string m_stdout;
   std::string m_stderr;
   std::string m_working_dir;
-  nub_size_t m_pid_stop_count;
-  PThreadEvent m_events; // Threaded events that we can wait for
+  nub_size_t m_pid_stop_count = 0;
+  /// Threaded events that we can wait for.
+  PThreadEvent m_events{0, all_event_bits};
   pthread_t m_pid_pthread;
-  nub_launch_flavor_t m_launch_flavor; // How to launch our inferior process
-  DNBError
-      m_launch_status; // This holds the status from the last launch attempt.
+  /// How to launch our inferior process.
+  nub_launch_flavor_t m_launch_flavor = eLaunchFlavorDefault;
+  /// This holds the status from the last launch attempt.
+  DNBError m_launch_status;
   std::vector<std::string> m_arg_vec;
-  std::vector<std::string>
-      m_env_vec; // This will be unparsed - entries FOO=value
+  /// This will be unparsed entries FOO=value
+  std::vector<std::string> m_env_vec;
   std::string m_working_directory;
   std::string m_process_event;
-  bool m_detach_on_error;
-  bool m_unmask_signals;
+  bool m_detach_on_error = false;
+  bool m_unmask_signals = false;
 
   void StartProcessStatusThread();
   void StopProcessStatusThread();