fix typo

dtool/src/dtoolbase/dallocator.T

@@ -70,7 +70,7 @@ allocate(TYPENAME dallocator<Type>::size_type n, allocator<void>::const_pointer)
 
 template<class Type>
 INLINE void dallocator<Type>::
-deallocate(TYPENAME pallocator<Type>::pointer p, TYPENAME pallocator<Type>::size_type) {
+deallocate(TYPENAME dallocator<Type>::pointer p, TYPENAME dallocator<Type>::size_type) {
   (*global_operator_delete)(p);
 }