runtime: fixed case where tagged stream blocks produce zero length tags
blocks: allow extra header chunks in wav_file_source
qa_fir_filter_with_buffer.cc : Fix incorrect use of sizeof().

Addresses CID 1046078. sizeof the product of two numbers is wrong.
The intent is to set the actual_output vector to zero. This appears
to break QA, the test numbers need updating.

Signed-off-by: Philip Balister <philip@balister.org>
fir_filter.cc : Address Coverity sizeof not portable warnings.

Fixes CID 1042972, 1042973, 1042974, 1042974, 1042976.

Signed-off-by: Philip Balister <philip@balister.org>
fir_filter.cc, fir_filter_with_buffer.cc : Address Coverity sizeof not portable warnings.

Addresses CID 1043317, 1043318, 1043319, and 1043320.

Signed-off-by: Philip Balister <philip@balister.org>
dc_blocker_cc_impl.cc, dc_blocker_ff_impl.cc : Fix uninitialized pointer.

Addresses CID 1043254, 1043255.

As long as the code properly follows the d_long_form state, existing code
is fine. However by forcing the unused pointers to NULL, we should catch
mistakes as core dumps, not mysterious failures.

Signed-off-by: Philip Balister <philip@balister.org>
digital: fixed simple warning on ofdm code.
blocks: updated UDP source to handle no network connections by allowing use of loopback device. Also fixed an infrequent problem on shutdown before the thread exited.

Updated QA code to verify ports used will not clash.
Merge branch 'maint' of git.gnuradio.org:gnuradio into maint
filter: fixed missing copyright and import sys in examples