selftests/tls: Add {} to avoid static checker warning

This silences a static checker warning due to the unusual macro
construction of EXPECT_*() by adding explicit {}s around the enclosing
while loop.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: 7f657d5bf5 ("selftests: tls: add selftests for TLS sockets")
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

tools/testing/selftests/net/tls.c

@@ -418,8 +418,9 @@ TEST_F(tls, sendmsg_large)
 		EXPECT_EQ(sendmsg(self->cfd, &msg, 0), send_len);
 	}
 
-	while (recvs++ < sends)
+	while (recvs++ < sends) {
 		EXPECT_NE(recv(self->fd, mem, send_len, 0), -1);
+	}
 
 	free(mem);
 }