gstcheck is declaring its own buffers glist which ends up
overwritten, loks like the code meant to use that already
gcc 10 is also complaining about this, but only on static
builds for some reason
```
FAILED: subprojects/gst-plugins-ugly/tests/check/elements_amrnbenc
/usr/bin/ld: subprojects/gstreamer/libs/gst/check/libgstcheck-1.0.a(gstcheck.c.o):(.bss+0x38): multiple definition of `buffers'; subprojects/gst-plugins-ugly/tests/check/708af1f@@elements_amrnbenc@exe/elements_amrnbenc.c.o:(.bss+0x18): first defined here
collect2: error: ld returned 1 exit status
```
also remove unused var `current_buf`
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-ugly/-/merge_requests/62>
Original commit message from CVS:
* tests/check/elements/amrnbenc.c: (setup_amrnbenc),
(cleanup_amrnbenc):
* tests/check/elements/mpeg2dec.c: (setup_mpeg2dec),
(cleanup_mpeg2dec):
re-apply as it was -bad and not -ugly that is frozen, doh
Original commit message from CVS:
* gst/asfdemux/gstasfdemux.c:
(gst_asf_demux_get_gst_tag_from_tag_name),
(gst_asf_demux_process_ext_content_desc):
add a comment about a future change
* tests/check/elements/amrnbenc.c: (setup_amrnbenc),
(cleanup_amrnbenc):
* tests/check/elements/mpeg2dec.c: (setup_mpeg2dec),
(cleanup_mpeg2dec):
consistent pad (de)activation
Original commit message from CVS:
* tests/check/elements/amrnbenc.c: (push_data):
Init memory before feeding it to the encoder to make
the valgrind test succeed.
Original commit message from CVS:
add test for amrnbenc, enable test infrastructure, and fix a leak
* common/check.mak:
allow for specifying more than one suppressions file in SUPPRESSIONS
* Makefile.am:
* tests/Makefile.am:
* tests/check/.cvsignore:
* tests/check/Makefile.am:
* tests/check/elements/.cvsignore:
* configure.ac:
add tests/check
* tests/check/gst-plugins-ugly.supp:
add suppressions for libs used by -ugly
* tests/check/elements/amrnbenc.c: (buffer_new), (buffer_unref),
(setup_amrnbenc), (cleanup_amrnbenc), (push_data),
(GST_START_TEST), (amrnbenc_suite), (main):
add a simple test for encoding amr
* ext/amrnb/amrnbenc.c: (gst_amrnbenc_init):
fix pad template leaks
