make code compile with newer gcc versions too

diff --git a/src/i2n_configdata.hpp b/src/i2n_configdata.hpp
index 9a56deb..b2c8088 100644 (file)
--- a/src/i2n_configdata.hpp
+++ b/src/i2n_configdata.hpp
@@ -737,13 +737,13 @@ class GroupedKeyValueData
 
         GroupDataType& operator[](const GroupKeyType& key)
         {
-            return getValueRef(key);
+            return inherited::getValueRef(key);
         } // eo operator [](const groupKey&)
 
 
         const GroupDataType& operator[](const GroupKeyType& key) const
         {
-            return getConstValueRef(key);
+            return inherited::getConstValueRef(key);
         } // eo operator [](const groupKey&) const
 
 
@@ -770,7 +770,7 @@ class GroupedKeyValueData
             {
                 return false;
             }
-            return getConstValueRef(group_key).hasKey(key);
+            return inherited::getConstValueRef(group_key).hasKey(key);
         } // eo hasKey(const GroupKeyType&,const KeyType&) const