pinctrl: Prevent leak of mac_binding and fdb struct. #3398

Job	Run time
Prepare container	3m 8s
linux rpm fedora	7m 0s
osx clang --disable-ssl	2m 1s
linux gcc --disable-ssl	2m 35s
linux clang --disable-ssl	2m 49s
linux gcc test -300	9m 44s
linux gcc test 301-600	6m 55s
linux gcc test 601- unstable	6m 29s
linux clang test sanitizers -300	13m 3s
linux clang test sanitizers 301-600	9m 42s
linux clang test sanitizers 601- unstable	10m 55s
linux gcc test -ljemalloc -300	10m 16s
linux gcc test -ljemalloc 301-600	7m 9s
linux gcc test -ljemalloc 601- unstable	6m 44s
linux gcc system-test-dpdk dpdk -100	17m 5s
linux gcc system-test-dpdk dpdk 101- unstable	14m 26s
linux gcc system-test-userspace -100	15m 58s
linux gcc system-test-userspace 101- unstable	13m 24s
linux gcc system-test -100	18m 28s
linux gcc system-test 101- unstable	18m 15s
linux clang system-test sanitizers -100	20m 7s
linux clang system-test sanitizers 101- unstable	19m 35s
linux x86 gcc --disable-ssl	2m 36s
	3h 58m 24s

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