adb: remove unnecessary addr arguments to accept.

Follow up to https://android-review.googlesource.com/#/c/261412/

Change-Id: I0ee130db302940f3224cc823a26b02fc45da0fca
Test: mma
diff --git a/adb_auth_client.cpp b/adb_auth_client.cpp
index 9d8dfc0..84ad6ef 100644
--- a/adb_auth_client.cpp
+++ b/adb_auth_client.cpp
@@ -151,9 +151,7 @@
 }
 
 static void adb_auth_listener(int fd, unsigned events, void* data) {
-    sockaddr_storage addr;
-    socklen_t alen = sizeof(addr);
-    int s = adb_socket_accept(fd, reinterpret_cast<sockaddr*>(&addr), &alen);
+    int s = adb_socket_accept(fd, nullptr, nullptr);
     if (s < 0) {
         PLOG(ERROR) << "Failed to accept";
         return;