several segmentation fault of AudioManager

Hi all

During release effort of N-0.1,
I've got several segmentation fault of AudioManager and PCL.
I suspect the update of PCO may cause these seg. fault.

##########
audiomanager
##########
[ number of tests: 6 ]
[ run_1 ][ 53.468739] AmControlInterf[331]: segfault at 0 ip 0000000000473e8a sp 00007fffdd657dd0 error 4 in AmControlInterfaceTest[400000+1ae000]
/opt/tests/audiomanager/audiomanager_t.inc: line 11: 331 Segmentation fault (core dumped) ${_run_dir}/$1 > /tmp/t
[ run_2 ][ 53.532716] AmMapHandlerTes[337]: segfault at 0 ip 00000000004689e9 sp 00007ffe00608340 error 4 in AmMapHandlerTest[400000+1d8000]
/opt/tests/audiomanager/audiomanager_t.inc: line 11: 337 Segmentation fault (core dumped) ${_run_dir}/$1 > /tmp/t
[ run_3 ][ PASSED ] 27 tests.
[ run_4 ][ PASSED ] 14 tests.
[ run_5 ][ 53.881469] AmRoutingInterf[347]: segfault at 0 ip 000000000046b189 sp 00007ffd9fb2f240 error 4 in AmRoutingInterfaceTest[400000+198000]
/opt/tests/audiomanager/audiomanager_t.inc: line 11: 347 Segmentation fault (core dumped) ${_run_dir}/$1 > /tmp/t
[ run_6 ][ PASSED ] 3 tests.
##########
audiomanagerplugins
##########
[ number of tests: 5 ]
[ run_1 ]AmCommandSenderCAPITest: /usr/src/debug/audiomanagerplugins/7.4-r1/git/PluginCommandInterfaceCAPI/test/CAmCommandSenderCAPITest.cpp:55: void* run_client(void*): Assertion `env->mProxy' failed.
/opt/tests/audiomanagerplugins/audiomanagerplugins_t.inc: line 11: 362 Aborted (core dumped) ${_run_dir}/$1 > /tmp/t
[ run_2 ][ run_3 ][ run_4 ]AmRoutingInterfaceCAPITests: /usr/src/debug/audiomanagerplugins/7.4-r1/git/PluginRoutingInterfaceCAPI/test/CAmRoutingInterfaceCAPITests.cpp:134: void* run_client(void*): Assertion `env->mProxy' failed.
/opt/tests/audiomanagerplugins/audiomanagerplugins_t.inc: line 11: 383 Aborted (core dumped) ${_run_dir}/$1 > /tmp/t
[ run_5 ][ 79.923036] AmRoutingReceiv[394]: segfault at 788 ip 00000000004b55e0 sp 00007fffc0144cb8 error 4 in AmRoutingReceiveAsyncTest[400000+f2000]
/opt/tests/audiomanagerplugins/audiomanagerplugins_t.inc: line 11: 394 Segmentation fault (core dumped) ${_run_dir}/$1 > /tmp/t