profiles/health/hdp: Fix memory leak in SDP record preparation

profiles/health/hdp: Fix memory leak in SDP record preparation

Sdp record preparation part is copied to android/health.c from
profiles/health/hdp_utils.c. Memory leak is noticed while testing. Memory
summay is from android daemon, but code snippet is same. It is already fixed
in android/health.c while submitting android related patches.

==12515== 286 (16 direct, 270 indirect) bytes in 1 blocks are definitely lost in loss record 158 of 165
==12515==    at 0x4C2AB80: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12515==    by 0x44AC45: sdp_list_append (sdp.c:1743)
==12515==    by 0x4398F9: register_features (health.c:381)
==12515==    by 0x4091CC: queue_foreach (queue.c:219)
==12515==    by 0x43A31F: bt_health_mdep_cfg_data (health.c:398)
==12515==    by 0x418B50: cmd_watch_cb (ipc.c:144)
==12515==    by 0x4E7FCE4: g_main_context_dispatch (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4000.0)
==12515==    by 0x4E80047: ??? (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4000.0)
==12515==    by 0x4E80309: g_main_loop_run (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4000.0)
==12515==    by 0x4044F2: main (main.c:538)