Minor changes to debug_log_writer

- Removed unused m_first data member.
- Explicitly delete copy constructor and assignment operator.
- Removed unused included headers.

src/debug_log/debug_log_writer.cc

@@ -15,18 +15,6 @@
 
 #include "src/debug_log/debug_log_writer.h"
 
-#include <errno.h>
-#include <fcntl.h>
-#include <pthread.h>
-#include <stdio.h>
-#include <sys/ipc.h>
-#include <sys/shm.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <fstream>
-
 #include "src/utils/shared_files.h"
 
 namespace modsecurity {

src/debug_log/debug_log_writer.h

@@ -13,15 +13,7 @@
  *
  */
 
-#include <stdio.h>
-#include <sys/ipc.h>
-#include <sys/shm.h>
-#include <sys/types.h>
-
-#include <iostream>
-#include <map>
 #include <string>
-#include <cstring>
 
 
 #ifndef SRC_DEBUG_LOG_DEBUG_LOG_WRITER_H_
@@ -45,7 +37,7 @@ class DebugLogWriter {
     static int open(const std::string& m_fileName, std::string *error);
 
  private:
-    DebugLogWriter() : m_first(NULL) { }
+    DebugLogWriter() { }
     ~DebugLogWriter() { }
 
     // C++ 03
@@ -53,10 +45,8 @@ class DebugLogWriter {
     // Dont forget to declare these two. You want to make sure they
     // are unacceptable otherwise you may accidentally get copies of
     // your singleton appearing.
-    DebugLogWriter(DebugLogWriter const&);
-    void operator=(DebugLogWriter const&);
-
-    struct debug_log_file_handler *m_first;
+    DebugLogWriter(DebugLogWriter const&) = delete;
+    void operator=(DebugLogWriter const&) = delete;
 };