Fix tree.c->tree_get_entry_at() buffer overflow

I observed a crash on buflib>move_block
after dumping ram I noticed that the buffer for filetypes was being corrupted

tree_get_entry_at returns a entry from the buflib 'tree entry' buffer
filetree.c->ft_load writes data to this buffer before checking if it has
reached the last entry resulting in buffer overflow that overwrites the
next entry in the buffer ['filetypes']

Patch checks that the index passed to tree_get_entry_at() is in range
otherwise it returns NULL

Added checks + panic in other functions using tree_get_entry_at()
Fixed tree_lock_cache() calls in playlist and filetree

Change-Id: Ibf9e65652b4e00445e8e509629aebbcddffcfd4d

0 files changed, 0 insertions, 0 deletions