BUILDFIX: singleton unit test could not resurrect singleton

indra/llcommon/llsingleton.h

@@ -77,6 +77,11 @@ class LLSingleton : private boost::noncopyable
 		SingletonInstanceData()
 		:	mSingletonInstance(NULL),
 			mInitState(CONSTRUCTING)
+		{
+			construct();
+		}
+
+		void construct()
 		{
 			mSingletonInstance = new DERIVED_TYPE(); 
 			mInitState = INITIALIZING;
@@ -139,6 +144,7 @@ class LLSingleton : private boost::noncopyable
 		if (data.mInitState == DELETED)
 		{
 			llwarns << "Trying to access deleted singleton " << typeid(DERIVED_TYPE).name() << " creating new instance" << llendl;
+			data.construct();
 		}
 		
 		if (data.mInitState == INITIALIZING)