const_cast: convert some C-style casts and remove some redundant ones

Change-Id: I5493b2337dad102a4b22c6a6d646b4b0fd04e247

tools/source/generic/config.cxx

@@ -645,8 +645,8 @@ ImplGroupData* Config::ImplGetGroup() const
 
         // Always inherit group names and upate cache members
         pGroup->maGroupName             = maGroupName;
-        ((Config*)this)->mnDataUpdateId = mpData->mnDataUpdateId;
-        ((Config*)this)->mpActGroup     = pGroup;
+        const_cast<Config*>(this)->mnDataUpdateId = mpData->mnDataUpdateId;
+        const_cast<Config*>(this)->mpActGroup     = pGroup;
     }
 
     return mpActGroup;

tools/source/inet/inetstrm.cxx

@@ -402,7 +402,7 @@ int INetMessageOStream::PutMsgLine(const sal_Char* pData, sal_uIntPtr nSize)
         sal_Size nDocSiz = pTargetMsg->GetDocumentSize();
         sal_Size nWrite  = 0;
 
-        pLB->FillAppend((sal_Char*)pData, nSize, &nWrite);
+        pLB->FillAppend(pData, nSize, &nWrite);
         pTargetMsg->SetDocumentSize(nDocSiz + nWrite);
 
         if (nWrite < nSize) return INETSTREAM_STATUS_ERROR;

tools/source/zcodec/zcodec.cxx

@@ -177,7 +177,7 @@ long ZCodec::Write( SvStream& rOStm, const sal_uInt8* pData, sal_uIntPtr nSize )
     assert(&rOStm == mpOStm);
 
     PZSTREAM->avail_in = nSize;
-    PZSTREAM->next_in = (unsigned char*)pData;
+    PZSTREAM->next_in = const_cast<unsigned char*>(pData);
 
     while ( PZSTREAM->avail_in || ( PZSTREAM->avail_out == 0 ) )
     {