[libsigc++2/variadic] test_disconnect: Use slot<> instead of slot1<>.

[Murray Cumming <murrayc src gnome org>]

commit 241f83b902b6a21c6975d0e10ffb73b6762753ff
Author: Murray Cumming <murrayc murrayc com>
Date:   Thu Jan 14 10:19:06 2016 +0100

    test_disconnect: Use slot<> instead of slot1<>.
    
    Because we are trying to remove slot1,2,3, etc.

 tests/test_disconnect.cc |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/tests/test_disconnect.cc b/tests/test_disconnect.cc
index 44fd8e6..40a092a 100644
--- a/tests/test_disconnect.cc
+++ b/tests/test_disconnect.cc
@@ -139,7 +139,7 @@ int main(int argc, char* argv[])
 
   { // A slot# within a slot
     A a2;
-    sigc::slot1<int, int> setter = sigc::mem_fun(&a2, &A::foo);
+    sigc::slot<int, int> setter = sigc::mem_fun(&a2, &A::foo);
     sig.connect(sigc::compose(setter, &foo));
     result_stream << "sig is connected to compose(slot1(A::foo), foo) (size=" << sig.size() << "): ";
     sig(9);