Translate German variable names

Akt -> Current in ppt filter

Change-Id: I06f140d5f9a60b53d815e73ee0b7a2b283a52d79
Reviewed-on: https://gerrit.libreoffice.org/50684Reviewed-by: Michael Stahl <mstahl@redhat.com>
Tested-by: Jenkins <ci@libreoffice.org>

include/filter/msfilter/svdfppt.hxx

@@ -569,11 +569,11 @@ protected:
     std::unique_ptr<PptSlidePersistList> m_pMasterPages;
     std::unique_ptr<PptSlidePersistList> m_pSlidePages;
     std::unique_ptr<PptSlidePersistList> m_pNotePages;
-    sal_uInt16              nAktPageNum;
+    sal_uInt16              nCurrentPageNum;
     sal_uLong               nDocStreamPos;
     sal_uInt16              nPageColorsNum;
     PptPageKind             ePageColorsKind;
-    PptPageKind             eAktPageKind;
+    PptPageKind             eCurrentPageKind;
 
 protected:
     using SdrEscherImport::ReadObjText;