Qt4: FileOpenPanel generates proper URLs, simplify

This fixes the streaming wizard. We can now remove a few make_URI()
calls.

modules/gui/qt4/components/open_panels.cpp

@@ -279,13 +279,13 @@ void FileOpenPanel::updateMRL()
         for( int i = 0; i < ui.fileListWidg->count(); i++ )
         {
             if( !ui.fileListWidg->item( i )->text().isEmpty() )
-                fileList << ui.fileListWidg->item( i )->text();
+                fileList << toURI(ui.fileListWidg->item( i )->text());
         }
     else
     {
         fileList = dialogBox->selectedFiles();
         for( int i = 0; i < fileList.count(); i++ )
-            fileList[i] = toNativeSeparators( fileList[i] );
+            fileList[i] = toURI( fileList[i] );
     }
 
     /* Options */

modules/gui/qt4/dialogs/open.cpp

@@ -350,9 +350,7 @@ void OpenDialog::finish( bool b_enqueue = false )
         bool b_start = !i && !b_enqueue;
 
         input_item_t *p_input;
-        char* psz_uri = make_URI( qtu( itemsMRL[i] ), "file" );
-        p_input = input_item_New( p_intf, psz_uri, NULL );
-        free( psz_uri );
+        p_input = input_item_New( p_intf, qtu( itemsMRL[i] ), NULL );
 
         /* Insert options only for the first element.
            We don't know how to edit that anyway. */

modules/gui/qt4/dialogs_provider.cpp

@@ -729,10 +729,7 @@ void DialogsProvider::SDMenuAction( const QString& data )
  **/
 void DialogsProvider::playMRL( const QString &mrl )
 {
-    char* psz_uri = make_URI( qtu(mrl), NULL );
-    playlist_Add( THEPL, psz_uri, NULL,
+    playlist_Add( THEPL, qtu(mrl), NULL,
            PLAYLIST_APPEND | PLAYLIST_GO , PLAYLIST_END, true, false );
-    free( psz_uri );
-
     RecentsMRL::getInstance( p_intf )->addRecent( mrl );
 }