VS2013 incorrectly reports "warning C4573: the usage of 'symbol' requ…

…ires the compiler to capture 'this' but the current default capture mode does not allow it"; the issue and workaround is the same as for GCC 4.7 in commit:5244af7c.

Release/src/http/client/http_client_asio.cpp

@@ -44,7 +44,9 @@
 #include <unordered_set>
 #include <memory>
 
-#if !defined(__GNUC__) || (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8))
+#if defined(__GNUC__)
+
+#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
 #define AND_CAPTURE_MEMBER_FUNCTION_POINTERS
 #else
 // GCC Bug 56222 - Pointer to member in lambda should not require this to be captured
@@ -54,6 +56,21 @@
 #define AND_CAPTURE_MEMBER_FUNCTION_POINTERS , this
 #endif
 
+#elif defined(_MSC_VER)
+
+#if _MSC_VER >= 1900
+#define AND_CAPTURE_MEMBER_FUNCTION_POINTERS
+#else
+// This bug also afflicts VS2013 which incorrectly reports "warning C4573: the usage of 'symbol' requires the compiler to capture 'this' but the current default capture mode does not allow it"
+#define AND_CAPTURE_MEMBER_FUNCTION_POINTERS , this
+#endif
+
+#else
+
+#define AND_CAPTURE_MEMBER_FUNCTION_POINTERS
+
+#endif
+
 using boost::asio::ip::tcp;
 
 #ifdef __ANDROID__