QuicServerBackendIoUring: remove static_cast<size_t> for IoUringOptions

Summary:
IoUringOptions setters now take uint32_t. Remove unnecessary
static_cast<size_t>() wrappers around int32 gflags.

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overriding_review_checks_triggers_an_audit_and_retroactive_review
Oncall Short Name: feed_backend_oncall

landed-with-radar-review

Differential Revision: D100275950

fbshipit-source-id: 18af133093be71be320a2d0d77757abe33b7a845

Author: spikeh

quic/server/QuicServerBackendIoUring.cpp

@@ -39,9 +39,9 @@ std::unique_ptr<folly::EventBaseBackendBase> getEventBaseBackend() {
   if (FLAGS_qs_io_uring_capacity > 0) {
     try {
       folly::IoUringOptions options;
-      options.setCapacity(static_cast<size_t>(FLAGS_qs_io_uring_capacity))
-          .setMaxSubmit(static_cast<size_t>(FLAGS_qs_io_uring_max_submit))
-          .setMaxGet(static_cast<size_t>(FLAGS_qs_io_uring_max_get))
+      options.setCapacity(FLAGS_qs_io_uring_capacity)
+          .setMaxSubmit(FLAGS_qs_io_uring_max_submit)
+          .setMaxGet(FLAGS_qs_io_uring_max_get)
           .setRegisterRingFd(FLAGS_qs_io_uring_register_ring)
           .setUseRegisteredFds(FLAGS_qs_io_uring_use_registered_fds);
       if (folly::IoUringBackend::kernelSupportsRecvmsgMultishot()) {