tree 31c3a0a46ba111491666ebbede58d9696f124ebb
parent 6bc6d343e5c297a319259a379b188a8238b26e40
author Wan-Teh Chang <wtc@google.com> 1538757712 -0700
committer Wan-Teh Chang <wtc@google.com> 1539981123 +0000

Move the assertion back to get_free_fb().

Now that we have increased FRAME_BUFFERS to 16 in commit
cbb0743d32e425ad52747b8cfd2d0712607947b6, the assertion that was inside
get_free_fb() can be moved back to get_free_fb(), so that all callers of
get_free_fb() will automatically hit the assertion failure if
get_free_fb() fails.

Also change the scale_references() function to not ignore get_free_fb()
failure.

BUG=aomedia:2179
BUG=aomedia:2193

Change-Id: Id75779bd01e82825ec50b59a1a1ff913e550fa3d