fix undefined behaviour test

alib2aux/src/debug/UndefinedBehaviour.cpp

@@ -16,7 +16,7 @@ int UndefinedBehaviour::undefined_behaviour ( ) {
 	int a = 5;
 	int* b = ( int* ) ( ( ( size_t ) &a ) + 1 );
-	return i;
+	return * b;
 }
 } /* namespace debug */