Description: Bring Clang's _Nullable keyword to GCC
 This patch is for gcc only, no need for clang.
Forwarded: not-needed
--- a/libnativehelper/file_descriptor_jni.c
+++ b/libnativehelper/file_descriptor_jni.c
@@ -22,6 +22,7 @@
 #include "ALog-priv.h"
 
 #include "JniConstants.h"
+#define _Nullable
 
 static void EnsureArgumentIsFileDescriptor(JNIEnv* env, jobject instance) {
     ALOG_ALWAYS_FATAL_IF(instance == NULL, "FileDescriptor is NULL");