Backport of "rmdemux: add some integer overflow checks" into 1.22
Backport of !5072 (merged) "rmdemux: add some integer overflow checks".
Commits:
- 049ac454 rmdemux: Use GST_LOG_OBJECT instead of GST_LOG
- c448322b rmdemux: Check for integer overflows when calculating the size of SIPR audio buffers
- 7107ac20 rmdemux: Check that enough SIPR audio data is available when copying
- 018e034e rmdemux: Use GST_LOG_OBJECT instead of GST_LOG
- d24bc529 rmdemux: Check for integer overflow when calculation audio packet size