Header parsing assumes whitespace after colon

Not sure how, but fix line was deleted rather than committed.

Author: stewartbright

Release/src/http/client/http_client_asio.cpp

@@ -1123,6 +1123,7 @@ class asio_context : public request_context, public std::enable_shared_from_this
             if (colon != std::string::npos)
             {
                 auto name = header.substr(0, colon);
+                auto value = header.substr(colon + 1, header.size() - colon - 2);
                 boost::algorithm::trim(name);
                 boost::algorithm::trim(value);