xdgmimecache: Add assertion to silence static analysis false positive
After a lot of loop unwinding, during which I think it might have lost
its knowledge that cache->buffer != NULL
(from a prior check on line
739), scan-build seems to think that there can be a NULL
pointer
dereference of cache->buffer
within cache_magic_compare_to_data()
.
There can’t be. Add an assertion to try and help the analyser.
Signed-off-by: Philip Withnall pwithnall@gnome.org