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

src/html/htmlcell.cpp

@@ -237,8 +237,7 @@ bool wxHtmlCell::AdjustPagebreak(int *pagebreak,
 
 void wxHtmlCell::SetLink(const wxHtmlLinkInfo& link)
 {
-    if (m_Link) delete m_Link;
-    m_Link = NULL;
+    wxDELETE(m_Link);
     if (link.GetHref() != wxEmptyString)
         m_Link = new wxHtmlLinkInfo(link);
 }

src/html/htmlpars.cpp

@@ -250,8 +250,7 @@ void wxHtmlParser::DestroyDOMTree()
     }
     m_Tags = m_CurTag = NULL;
 
-    delete m_TextPieces;
-    m_TextPieces = NULL;
+    wxDELETE(m_TextPieces);
 }
 
 void wxHtmlParser::DoParsing()

src/html/htmltag.cpp

@@ -205,8 +205,7 @@ wxHtmlTagsCache::wxHtmlTagsCache(const wxString& source)
     for ( wxHtmlTagsCacheData::iterator i = Cache().begin();
           i != Cache().end(); ++i )
     {
-        delete[] i->Name;
-        i->Name = NULL;
+        wxDELETEA(i->Name);
     }
 }
 

src/html/htmlwin.cpp

@@ -469,14 +469,13 @@ bool wxHtmlWindow::DoSetPage(const wxString& source)
     SetBackgroundImage(wxNullBitmap);
 
     m_Parser->SetDC(dc);
-    if (m_Cell)
-    {
-        delete m_Cell;
-        // notice that it's important to set m_Cell to NULL here before calling
-        // Parse() below, even if it will be overwritten by its return value:
-        // without this we may crash if it's used from inside Parse()
-        m_Cell = NULL;
-    }
+
+    // notice that it's important to set m_Cell to NULL here before calling
+    // Parse() below, even if it will be overwritten by its return value as
+    // without this we may crash if it's used from inside Parse(), so use
+    // wxDELETE() and not just delete here
+    wxDELETE(m_Cell);
+
     m_Cell = (wxHtmlContainerCell*) m_Parser->Parse(newsrc);
     delete dc;
     m_Cell->SetIndent(m_Borders, wxHTML_INDENT_ALL, wxHTML_UNITS_PIXELS);

src/html/winpars.cpp

@@ -606,8 +606,7 @@ wxFont* wxHtmlWinParser::CreateCurrentFont()
 #endif
                             ))
     {
-        delete *fontptr;
-        *fontptr = NULL;
+        wxDELETE(*fontptr);
     }
 
     if (*fontptr == NULL)
@@ -669,11 +668,7 @@ void wxHtmlWinParser::SetInputEncoding(wxFontEncoding enc)
     m_nbsp = 0;
 
     m_InputEnc = m_OutputEnc = wxFONTENCODING_DEFAULT;
-    if (m_EncConv)
-    {
-        delete m_EncConv;
-        m_EncConv = NULL;
-    }
+    wxDELETE(m_EncConv);
 
     if (enc == wxFONTENCODING_DEFAULT)
         return;
@@ -738,8 +733,7 @@ void wxHtmlWinParser::SetInputEncoding(wxFontEncoding enc)
         wxLogError(_("Failed to display HTML document in %s encoding"),
                    wxFontMapper::GetEncodingName(enc).c_str());
         m_InputEnc = m_OutputEnc = wxFONTENCODING_DEFAULT;
-        delete m_EncConv;
-        m_EncConv = NULL;
+        wxDELETE(m_EncConv);
     }
 }
 #endif