https://bugs.llvm.org/show_bug.cgi?id=3888
clang analyzer doesn't know how to handle __attribute__(cleanup()).
There are only 2 warnings raised because the analyzer only look at the
current compilation unit for checking the malloc call. So only those
2 are detected by clang and then marked as memory leak.
This also means our current continuous integration doesn't check for
memory leaks.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>