Fix windows and mac build

malloc.h is not available on mac.
mntent.h and setmntent are not available on windows.

Test: cd external/e2fsprogs && mm

Change-Id: I3bc1b80156d3659f4d81975626a71f58d39ee61a
(cherry picked from commit 8ca6180b52349968daf601bd89e15491eb2f271f)
1 file changed