BUG#19318 valgrind: memory leak in ndb_mgmd

clean up after ConfigValuesFactory


ndb/include/util/ConfigValues.hpp:
  We now have a destructor
ndb/src/common/util/ConfigValues.cpp:
  Free m_cfg on destruct (if we've set it).
  
  Also getConfigValues() instead of m_cfg

ndb/include/util/ConfigValues.hpp

@@ -96,6 +96,7 @@ public:
 public:
   ConfigValuesFactory(Uint32 keys = 50, Uint32 data = 10); // Initial
   ConfigValuesFactory(ConfigValues * m_cfg);        //
+  ~ConfigValuesFactory();
 
   ConfigValues * m_cfg;
   ConfigValues * getConfigValues();

ndb/src/common/util/ConfigValues.cpp

@@ -294,6 +294,12 @@ ConfigValuesFactory::ConfigValuesFactory(ConfigValues * cfg){
   }
 }
 
+ConfigValuesFactory::~ConfigValuesFactory()
+{
+  if(m_cfg)
+    free(m_cfg);
+}
+
 ConfigValues *
 ConfigValuesFactory::create(Uint32 keys, Uint32 data){
   Uint32 sz = sizeof(ConfigValues);
@@ -528,7 +534,7 @@ ConfigValuesFactory::extractCurrentSection(const ConfigValues::ConstIterator & c
     }
   }
   
-  ConfigValues * ret = fac->m_cfg;
+  ConfigValues * ret = fac->getConfigValues();
   delete fac;
   return ret;
 }