signal: slot_iterator_buf: Remove T_result default type

This expected a result_type type alias. Luckily, in the few places where
we use this, we always specify the type, ignoring the default.

1 files changed, 1 insertions, 1 deletions

diff --git a/sigc++/signal.h b/sigc++/signal.h
index 455223e..69ca4d0 100644
--- a/sigc++/signal.h
+++ b/sigc++/signal.h
@@ -41,7 +41,7 @@ namespace internal
  * the slot. The return value is buffered, so that in an expression
  * like @code a = (*i) * (*i); @endcode the slot is executed only once.
  */
-template<typename T_emitter, typename T_result = typename T_emitter::result_type>
+template<typename T_emitter, typename T_result>
 struct slot_iterator_buf
 {
   using size_type = std::size_t;