AOSP: _GNU_SOURCE must be defined before any #include.

Fixes the "asprintf undeclared" warning in this code.

Bug: N/A
Test: builds
Change-Id: I42e1bfbdbc0391c5e5d7908204f9064ec858c84d
From AOSP commit: 1ebca4b43115846af705bd320bccb8f930e328c8

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
1 file changed