Fix some dumb typos.

test/core/end2end/fixtures/h2_sockpair+trace.cc

@@ -116,7 +116,7 @@ static void chttp2_init_server_socketpair(grpc_end2end_test_fixture* f,
   transport =
       grpc_create_chttp2_transport(&exec_ctx, server_args, sfd->server, false);
   server_setup_transport(f, transport);
-  grpc_chttp2_transport_start_reading(&exec_ctx, transport, nullptr.  nullptr);
+  grpc_chttp2_transport_start_reading(&exec_ctx, transport, nullptr, nullptr);
   grpc_exec_ctx_finish(&exec_ctx);
 }
 

test/core/end2end/fuzzers/client_fuzzer.cc

@@ -55,7 +55,7 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
   grpc_completion_queue* cq = grpc_completion_queue_create_for_next(nullptr);
   grpc_transport* transport =
       grpc_create_chttp2_transport(&exec_ctx, nullptr, mock_endpoint, true);
-  grpc_chttp2_transport_start_reading(&exec_ctx, transport, nullptr.  nullptr);
+  grpc_chttp2_transport_start_reading(&exec_ctx, transport, nullptr, nullptr);
 
   grpc_channel* channel = grpc_channel_create(
       &exec_ctx, "test-target", nullptr, GRPC_CLIENT_DIRECT_CHANNEL, transport);