Fix no-new-line warnings

Author: alvinng4

include/c_traceback/error.h

@@ -89,4 +89,4 @@ bool ctb_check_error(void);
  */
 void ctb_clear_error(void);
 
-#endif // C_TRACEBACK_ERROR_H
+#endif // C_TRACEBACK_ERROR_H

include/c_traceback/logging.h

@@ -191,4 +191,4 @@ void ctb_log_message_fmt(
     ...
 );
 
-#endif // C_TRACEBACK_LOGGING_H
+#endif // C_TRACEBACK_LOGGING_H

include/c_traceback/signal_handler.h

@@ -20,4 +20,4 @@ void ctb_install_signal_handler(void);
  */
 void ctb_dump_traceback_signal(const CTB_Error ctb_error);
 
-#endif /* C_TRACEBACK_SIGNAL_HANDLER_H */
+#endif /* C_TRACEBACK_SIGNAL_HANDLER_H */

include/c_traceback/trace.h

@@ -104,4 +104,4 @@ void ctb_push_call_stack_frame(
  */
 void ctb_pop_call_stack_frame(void);
 
-#endif /* C_TRACEBACK_TRACE_H */
+#endif /* C_TRACEBACK_TRACE_H */

include/c_traceback/traceback.h

@@ -23,4 +23,4 @@ void ctb_log_traceback(void);
  */
 void ctb_dump_traceback(void);
 
-#endif /* C_TRACEBACK_TRACEBACK_H */
+#endif /* C_TRACEBACK_TRACEBACK_H */