Merge "Make ScopedFileDescriptor default ctor implicit" am: 084e1948ae am: 37e8aa52e8 am: 983cf39afb

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1485444

Change-Id: I86f8387b2c653f0b589d5dbabb2a75b676c1676d
diff --git a/libs/binder/ndk/include_cpp/android/binder_auto_utils.h b/libs/binder/ndk/include_cpp/android/binder_auto_utils.h
index 18877af..8d60226 100644
--- a/libs/binder/ndk/include_cpp/android/binder_auto_utils.h
+++ b/libs/binder/ndk/include_cpp/android/binder_auto_utils.h
@@ -313,7 +313,8 @@
     /**
      * Takes ownership of a.
      */
-    explicit ScopedFileDescriptor(int a = -1) : ScopedAResource(a) {}
+    ScopedFileDescriptor() : ScopedFileDescriptor(-1) {}
+    explicit ScopedFileDescriptor(int a) : ScopedAResource(a) {}
     ~ScopedFileDescriptor() {}
     ScopedFileDescriptor(ScopedFileDescriptor&&) = default;
     ScopedFileDescriptor& operator=(ScopedFileDescriptor&&) = default;