fix windows build

by reverting part of commit
    c4cd079b
    Author: Noel Grandin <noel@peralex.com>
    Date:   Thu Sep 22 15:08:42 2016 +0200
    loplugin:unusedmethods in sc..vcl

Change-Id: I4d925532369b37e13d97edd907c12f59a350e6ea
Reviewed-on: https://gerrit.libreoffice.org/29196Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
Tested-by: Noel Grandin <noel.grandin@collabora.co.uk>

vcl/source/filter/FilterConfigCache.cxx

@@ -370,6 +370,13 @@ OUString FilterConfigCache::GetImportFormatName( sal_uInt16 nFormat )
     return OUString("");
 }
 
+OUString FilterConfigCache::GetImportFormatMediaType( sal_uInt16 nFormat )
+{
+    if( nFormat < aImport.size() )
+        return aImport[ nFormat ].sMediaType;
+    return OUString("");
+}
+
 OUString FilterConfigCache::GetImportFormatShortName( sal_uInt16 nFormat )
 {
     if( nFormat < aImport.size() )

vcl/source/filter/FilterConfigCache.hxx

@@ -86,6 +86,7 @@ public:
     OUString    GetImportFilterName( sal_uInt16 nFormat );
     OUString    GetImportFormatName( sal_uInt16 nFormat );
     OUString    GetImportFormatExtension( sal_uInt16 nFormat, sal_Int32 nEntry = 0);
+    OUString    GetImportFormatMediaType( sal_uInt16 nFormat );
     OUString    GetImportFormatShortName( sal_uInt16 nFormat );
     OUString    GetImportWildcard( sal_uInt16 nFormat, sal_Int32 nEntry );
     OUString    GetImportFilterType( sal_uInt16 nFormat );