TransferableHelper: fix annoying assertion "bad pCharClass"

The % must be URI encoded, not acceptable.

Change-Id: I1274170275d1a1432fb2f933cbd3c6ee8c35d436

svtools/source/misc/transfer.cxx

@@ -181,7 +181,7 @@ static ::rtl::OUString ImplGetParameterString( const TransferableObjectDescripto
             pToAccept[nBInd] = sal_False;
 
         const char aQuotedParamChars[] =
-            "()<>@,;:\\\"/[]?=!#$%&'*+-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ^_`abcdefghijklmnopqrstuvwxyz{|}~. ";
+            "()<>@,;:\\\"/[]?=!#$&'*+-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ^_`abcdefghijklmnopqrstuvwxyz{|}~. ";
 
         for ( sal_Int32 nInd = 0; nInd < RTL_CONSTASCII_LENGTH(aQuotedParamChars); ++nInd )
         {