Use cork in UpgradeAsync, silence a warning

examples/UpgradeAsync.cpp

@@ -77,13 +77,15 @@ int main() {
                     * such as res->writeStatus(...)->writeHeader(...)->end(...); or similar.*/
 
                     /* This call will immediately emit .open event */
-                    upgradeData->httpRes->template upgrade<PerSocketData>({
-                        /* We initialize PerSocketData struct here */
-                        .something = 13
-                    }, upgradeData->secWebSocketKey,
-                        upgradeData->secWebSocketProtocol,
-                        upgradeData->secWebSocketExtensions,
-                        upgradeData->context);
+                    upgradeData->httpRes->cork([upgradeData]() {
+                        upgradeData->httpRes->template upgrade<PerSocketData>({
+                            /* We initialize PerSocketData struct here */
+                            .something = 13
+                        }, upgradeData->secWebSocketKey,
+                            upgradeData->secWebSocketProtocol,
+                            upgradeData->secWebSocketExtensions,
+                            upgradeData->context);
+                    });
                 } else {
                     std::cout << "Async task done, but the HTTP socket was closed. Skipping upgrade to WebSocket!" << std::endl;
                 }

src/HttpRouter.h

@@ -134,7 +134,7 @@ private:
     inline std::pair<std::string_view, bool> getUrlSegment(int urlSegment) {
         if (urlSegment > urlSegmentTop) {
             /* Signal as STOP when we have no more URL or stack space */
-            if (!currentUrl.length() || urlSegment > MAX_URL_SEGMENTS - 1) {
+            if (!currentUrl.length() || urlSegment > int(MAX_URL_SEGMENTS - 1)) {
                 return {{}, true};
             }