Fixes to remove compile warnings.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@29420 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/html/webkit.h

@@ -79,7 +79,7 @@ private:
     wxWindowID m_windowID;
     wxString m_currentURL;
     wxString m_pageTitle;
-    void* m_webView;
+    objc_object* m_webView;
     //It should be WebView, but WebView is Cocoa only, so any class which included
     //this header would have to link to Cocoa, so for now use void* instead.
 };

src/html/htmlctrl/webkit/webkit.mm

@@ -201,16 +201,16 @@ bool wxWebKitCtrl::GoBack(){
     if ( !m_webView )
         return false;
     
-    [m_webView goBack];
-    return true;
+    bool result = [(WebView*)m_webView goBack];
+    return result;
 }
 
 bool wxWebKitCtrl::GoForward(){ 
     if ( !m_webView )
         return false;
         
-    [m_webView goForward];
-    return true;
+    bool result = [(WebView*)m_webView goForward];
+    return result;
 }
 
 void wxWebKitCtrl::Reload(){ 
@@ -236,14 +236,13 @@ bool wxWebKitCtrl::CanGetPageSource(){
 }
 
 wxString wxWebKitCtrl::GetPageSource(){
-    if ( !m_webView )
-        return wxT("");
     
     if (CanGetPageSource()){
         WebDataSource* dataSource = [[m_webView mainFrame] dataSource];
         return wxStringWithNSString( [[dataSource representation] documentSource] );
     }
     
+    return wxT("");
 }
 
 void wxWebKitCtrl::SetPageSource(wxString& source, const wxString& baseUrl){