rootdev: Fix memory leak match_sysfs_device allocates a struct dirent that was used with readdir_r. When the function was converted to use readdir, the malloc wasn't removed, so this is now a memory leak. Remove the malloc entirely, since readdir returns a pointer to its own memory. BUG=b:225008839 TEST=FEATURES=test emerge-octopus rootdev Change-Id: I20325e8b4baebca7ea358ccd804f761aeda2bfa1 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/rootdev/+/3804964 Tested-by: Benjamin Gordon <[email protected]> Reviewed-by: Jordan Abrahams-Whitehead <[email protected]> Commit-Queue: Benjamin Gordon <[email protected]>