Fix example build error (#949)

* Fixed example build error

* Update EchoServer.cpp

examples/BroadcastingEchoServer.cpp

@@ -14,6 +14,7 @@ int main() {
         .compression = uWS::SHARED_COMPRESSOR,
         .maxPayloadLength = 16 * 1024 * 1024,
         .idleTimeout = 10,
+        .maxBackpressure = 1 * 1024 * 1204,
         /* Handlers */
         .open = [](auto *ws, auto *req) {
             /* Let's make every connection subscribe to the "broadcast" topic */

examples/EchoServer.cpp

@@ -11,7 +11,8 @@ int main() {
         /* Settings */
         .compression = uWS::SHARED_COMPRESSOR,
         .maxPayloadLength = 16 * 1024,
-	.idleTimeout = 10,
+        .idleTimeout = 10,
+        .maxBackpressure = 1 * 1024 * 1204,
         /* Handlers */
         .open = [](auto *ws, auto *req) {
 

examples/EchoServerThreaded.cpp

@@ -20,6 +20,7 @@ int main() {
                 .compression = uWS::SHARED_COMPRESSOR,
                 .maxPayloadLength = 16 * 1024,
                 .idleTimeout = 10,
+                .maxBackpressure = 1 * 1024 * 1204,
                 /* Handlers */
                 .open = [](auto *ws, auto *req) {