mysqlc: move template specialization to namespace

so gcc 4.8 would be happy about it.
See:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56480

Change-Id: I7e696758c5598b9e64947bc9b1606c653becddce
Reviewed-on: https://gerrit.libreoffice.org/71294Reviewed-by: Andras Timar <andras.timar@collabora.com>
Tested-by: Andras Timar <andras.timar@collabora.com>

connectivity/source/drivers/mysqlc/mysqlc_prepared_resultset.cxx

@@ -199,6 +199,7 @@ template <typename T> T OPreparedResultSet::retrieveValue(sal_Int32 nColumnIndex
         return getRowSetValue(nColumnIndex);
 }
 
+namespace connectivity { namespace mysqlc {
 template <> uno::Sequence<sal_Int8> OPreparedResultSet::retrieveValue(sal_Int32 column)
 {
     // TODO make conversion possible
@@ -257,6 +258,7 @@ template <> OUString OPreparedResultSet::retrieveValue(sal_Int32 column)
     OUString sReturn = OUString(sStr, *m_aData[column - 1].length, m_encoding);
     return sReturn;
 }
+}}
 
 ORowSetValue OPreparedResultSet::getRowSetValue(sal_Int32 nColumnIndex)
 {

connectivity/source/drivers/mysqlc/mysqlc_prepared_resultset.hxx

@@ -93,8 +93,8 @@ class OPreparedResultSet final : public OBase_Mutex,
 
     void SAL_CALL getFastPropertyValue(Any& rValue, sal_Int32 nHandle) const SAL_OVERRIDE;
 
-    template <typename T> T safelyRetrieveValue(const sal_Int32 nColumnIndex);
-    template <typename T> T retrieveValue(const sal_Int32 nColumnIndex);
+    template <typename T> T safelyRetrieveValue(sal_Int32 nColumnIndex);
+    template <typename T> T retrieveValue(sal_Int32 nColumnIndex);
     connectivity::ORowSetValue getRowSetValue(sal_Int32 nColumnIndex);
 
     // you can't delete objects of this type