Add optional yield_to arguments

test/http/read.cpp

@@ -378,17 +378,10 @@ public:
     {
         testThrow();
 
-        yield_to(std::bind(&read_test::testFailures,
-            this, std::placeholders::_1));
-
-        yield_to(std::bind(&read_test::testReadHeaders,
-            this, std::placeholders::_1));
-
-        yield_to(std::bind(&read_test::testRead,
-            this, std::placeholders::_1));
-
-        yield_to(std::bind(&read_test::testEof,
-            this, std::placeholders::_1));
+        yield_to(&read_test::testFailures, this);
+        yield_to(&read_test::testReadHeaders, this);
+        yield_to(&read_test::testRead, this);
+        yield_to(&read_test::testEof, this);
     }
 };
 

test/http/write.cpp

@@ -702,12 +702,9 @@ public:
 
     void run() override
     {
-        yield_to(std::bind(&write_test::testAsyncWriteHeaders,
-            this, std::placeholders::_1));
-        yield_to(std::bind(&write_test::testAsyncWrite,
-            this, std::placeholders::_1));
-        yield_to(std::bind(&write_test::testFailures,
-            this, std::placeholders::_1));
+        yield_to(&write_test::testAsyncWriteHeaders, this);
+        yield_to(&write_test::testAsyncWrite, this);
+        yield_to(&write_test::testFailures, this);
         testOutput();
         test_std_ostream();
         testOstream();