[1253] initialize new member in constructors

src/lib/python/isc/datasrc/finder_python.cc

@@ -103,7 +103,7 @@ namespace {
 // The s_* Class simply covers one instantiation of the object
 class s_ZoneFinder : public PyObject {
 public:
-    s_ZoneFinder() : cppobj(ZoneFinderPtr()) {};
+    s_ZoneFinder() : cppobj(ZoneFinderPtr()), base_obj(NULL) {};
     ZoneFinderPtr cppobj;
     // This is a reference to a base object; if the object of this class
     // depends on another object to be in scope during its lifetime,

src/lib/python/isc/datasrc/iterator_python.cc

@@ -45,7 +45,7 @@ namespace {
 // The s_* Class simply covers one instantiation of the object
 class s_ZoneIterator : public PyObject {
 public:
-    s_ZoneIterator() : cppobj(ZoneIteratorPtr()) {};
+    s_ZoneIterator() : cppobj(ZoneIteratorPtr()), base_obj(NULL) {};
     ZoneIteratorPtr cppobj;
     // This is a reference to a base object; if the object of this class
     // depends on another object to be in scope during its lifetime,

src/lib/python/isc/datasrc/updater_python.cc

@@ -54,7 +54,7 @@ namespace {
 // The s_* Class simply covers one instantiation of the object
 class s_ZoneUpdater : public PyObject {
 public:
-    s_ZoneUpdater() : cppobj(ZoneUpdaterPtr()) {};
+    s_ZoneUpdater() : cppobj(ZoneUpdaterPtr()), base_obj(NULL) {};
     ZoneUpdaterPtr cppobj;
     // This is a reference to a base object; if the object of this class
     // depends on another object to be in scope during its lifetime,