Remove useless initializations

wxObject-derived types and wxString are null/empty by default.

src/aui/framemanager.cpp

@@ -3998,7 +3998,7 @@ void wxAuiManager::OnSetCursor(wxSetCursorEvent& event)
 {
     // determine cursor
     wxAuiDockUIPart* part = HitTest(event.GetX(), event.GetY());
-    wxCursor cursor = wxNullCursor;
+    wxCursor cursor;
 
     if (part)
     {

src/generic/prntdlgg.cpp

@@ -86,7 +86,6 @@ wxIMPLEMENT_CLASS(wxPostScriptPrintNativeData, wxPrintNativeDataBase);
 
 wxPostScriptPrintNativeData::wxPostScriptPrintNativeData()
 {
-    m_previewCommand = wxEmptyString;
 #ifdef __VMS__
     m_printerCommand = wxT("print");
     m_printerOptions = wxT("/nonotify/queue=psqueue");
@@ -95,14 +94,11 @@ wxPostScriptPrintNativeData::wxPostScriptPrintNativeData()
 
 #ifdef __WXMSW__
     m_printerCommand = wxT("print");
-    m_printerOptions = wxEmptyString;
     m_afmPath = wxT("c:\\windows\\system\\");
 #endif
 
 #if !defined(__VMS__) && !defined(__WXMSW__)
     m_printerCommand = wxT("lpr");
-    m_printerOptions = wxEmptyString;
-    m_afmPath = wxEmptyString;
 #endif
 
     m_printerScaleX = 1.0;

src/generic/treectlg.cpp

@@ -3516,7 +3516,6 @@ void wxGenericTreeCtrl::OnRenameCancelled(wxGenericTreeItem *item)
 {
     // let owner know that the edit was cancelled
     wxTreeEvent le(wxEVT_TREE_END_LABEL_EDIT, this, item);
-    le.m_label = wxEmptyString;
     le.m_editCancelled = true;
 
     GetEventHandler()->ProcessEvent( le );

src/html/chm.cpp

@@ -782,8 +782,6 @@ private:
 wxChmFSHandler::wxChmFSHandler() : wxFileSystemHandler()
 {
     m_lasterror=0;
-    m_pattern=wxEmptyString;
-    m_found=wxEmptyString;
     m_chm=NULL;
 }
 

src/html/helpdata.cpp

@@ -151,7 +151,6 @@ class HP_TagHandler : public wxHtmlTagHandler
         {
             m_data = NULL;
             m_book = b;
-            m_name = m_page = wxEmptyString;
             m_level = 0;
             m_id = wxID_ANY;
             m_count = 0;
@@ -656,10 +655,10 @@ bool wxHtmlHelpData::AddBook(const wxString& book)
 
     wxString title = _("noname"),
              safetitle,
-             start = wxEmptyString,
-             contents = wxEmptyString,
-             index = wxEmptyString,
-             charset = wxEmptyString;
+             start,
+             contents,
+             index,
+             charset;
 
     fi = fsys.OpenFile(book);
     if (fi == NULL)

src/html/htmlcell.cpp

@@ -638,7 +638,6 @@ wxHtmlContainerCell::wxHtmlContainerCell(wxHtmlContainerCell *parent) : wxHtmlCe
     m_AlignVer = wxHTML_ALIGN_BOTTOM;
     m_IndentLeft = m_IndentRight = m_IndentTop = m_IndentBottom = 0;
     m_WidthFloat = 100; m_WidthFloatUnits = wxHTML_UNITS_PERCENT;
-    m_BkColour = wxNullColour;
     m_Border = 0;
     m_MinHeight = 0;
     m_MinHeightAlign = wxHTML_ALIGN_TOP;

src/html/htmprint.cpp

@@ -612,7 +612,6 @@ wxHtmlEasyPrinting::wxHtmlEasyPrinting(const wxString& name, wxWindow *parentWin
     m_Name = name;
     m_PrintData = NULL;
     m_PageSetupData = new wxPageSetupDialogData;
-    m_Headers[0] = m_Headers[1] = m_Footers[0] = m_Footers[1] = wxEmptyString;
 
     m_PageSetupData->EnableMargins(true);
     m_PageSetupData->SetMarginTopLeft(wxPoint(25, 25));

src/html/winpars.cpp

@@ -65,7 +65,6 @@ wxHtmlWinParser::wxHtmlWinParser(wxHtmlWindowInterface *wndIface)
                         for (m = 0; m < 7; m++)
                         {
                             m_FontsTable[i][j][k][l][m] = NULL;
-                            m_FontsFacesTable[i][j][k][l][m] = wxEmptyString;
 #if !wxUSE_UNICODE
                             m_FontsEncTable[i][j][k][l][m] = wxFONTENCODING_DEFAULT;
 #endif

src/ribbon/bar.cpp

@@ -77,7 +77,7 @@ void wxRibbonBar::AddPage(wxRibbonPage *page)
     wxString label;
     if(m_flags & wxRIBBON_BAR_SHOW_PAGE_LABELS)
         label = page->GetLabel();
-    wxBitmap icon = wxNullBitmap;
+    wxBitmap icon;
     if(m_flags & wxRIBBON_BAR_SHOW_PAGE_ICONS)
         icon = page->GetIcon();
     m_art->GetBarTabWidth(dcTemp, this, label, icon,
@@ -177,7 +177,7 @@ bool wxRibbonBar::Realize()
         wxString label;
         if(m_flags & wxRIBBON_BAR_SHOW_PAGE_LABELS)
             label = info.page->GetLabel();
-        wxBitmap icon = wxNullBitmap;
+        wxBitmap icon;
         if(m_flags & wxRIBBON_BAR_SHOW_PAGE_ICONS)
             icon = info.page->GetIcon();
         m_art->GetBarTabWidth(dcTemp, this, label, icon,

src/richtext/richtextxml.cpp

@@ -839,8 +839,6 @@ bool wxRichTextImage::ExportXML(wxXmlNode* parent, wxRichTextXMLHandler* handler
                 strData = wxString((const char*) data, wxConvUTF8, size);
                 delete[] data;
             }
-            else
-                strData = wxEmptyString;
         }
 
     }