be more paranoid

Change-Id: I8ab6c26a489f5cbb6b92c36313c6912939895e52

connectivity/source/drivers/odbc/OPreparedStatement.cxx

@@ -359,6 +359,8 @@ void OPreparedStatement::setParameter(const sal_Int32 parameterIndex, const sal_
     }
     else
     {
+        assert(getOwnConnection()->getTextEncoding() != RTL_TEXTENCODING_UCS2 &&
+               getOwnConnection()->getTextEncoding() != RTL_TEXTENCODING_UCS4);
         OString sOData(
             OUStringToOString(_sData, getOwnConnection()->getTextEncoding()));
         nCharLen = nByteLen = sOData.getLength();

connectivity/source/drivers/odbc/OTools.cxx

@@ -415,6 +415,7 @@ OUString OTools::getStringValue(OConnection* _pConnection,
     case SQL_WLONGVARCHAR:
     {
         SQLWCHAR waCharArray[2048];
+        BOOST_STATIC_ASSERT(sizeof(waCharArray) % sizeof(SQLWCHAR) == 0);
         rtl_TextEncoding nSQLWCHAREncoding = RTL_TEXTENCODING_UCS2;
         BOOST_STATIC_ASSERT(sizeof(SQLWCHAR) == 2 || sizeof(SQLWCHAR) == 4);
         if(sizeof(SQLWCHAR) == 4)