adb: add error-generating overload of adb_close(unique_fd).

Test: mma
Change-Id: Id9c1230394afe980ba90dbd5150b65e8bf997b6c
diff --git a/adb/adb_unique_fd.h b/adb/adb_unique_fd.h
index be63262..bad501a 100644
--- a/adb/adb_unique_fd.h
+++ b/adb/adb_unique_fd.h
@@ -31,3 +31,7 @@
 #if !defined(_WIN32)
 bool Pipe(unique_fd* read, unique_fd* write, int flags = 0);
 #endif
+
+template <typename T>
+int adb_close(const android::base::unique_fd_impl<T>&)
+        __attribute__((__unavailable__("adb_close called on unique_fd")));