Merge pull request open-source-parsers#771 from Binyang2014/master

Disable warning "C4702" when compiling json cpp using vs2013 and above

resolves open-source-parsers#759

Author: cdunn2001

src/lib_json/json_value.cpp

@@ -19,6 +19,11 @@
 #include <cstddef> // size_t
 #include <algorithm> // min()
 
+// Disable warning C4702 : unreachable code
+#if defined(_MSC_VER) && _MSC_VER >= 1800 // VC++ 12.0 and above
+#pragma warning(disable:4702)
+#endif
+
 #define JSON_ASSERT_UNREACHABLE assert(false)
 
 namespace Json {