Use wxDELETE() and wxDELETEA() when possible.

Use wxDELETE[A]() functions which automatically NULL out their arguments after
deleting them instead of doing it manually.

Closes #9685.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@64656 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/sockets/baseserver.cpp

@@ -650,8 +650,7 @@ EventWorker::DoRead()
         if (m_size == m_infill)
         {
             m_signature[0] = m_signature[1] = 0x0;
-            delete [] m_inbuf;
-            m_inbuf = NULL;
+            wxDELETEA(m_inbuf);
             m_infill = 0;
             return;
         }
@@ -713,8 +712,7 @@ void  EventWorker::DoWrite()
     {
         if (m_written == m_size)
         {
-            delete [] m_outbuf;
-            m_outbuf = NULL;
+            wxDELETEA(m_outbuf);
             m_outfill = 0;
             LogWorker( "All data written");
             return;