Numerous leaks exists in mpegtspacketizer table parsing.

Here is some outputs from valgrind:

==15575== 22,646 (1,592 direct, 21,054 indirect) bytes in 94 blocks are definitely lost in loss record 18 of 24
==15575==    at 0x4022765: malloc (vg_replace_malloc.c:149)
==15575==    by 0x415CAF5: g_malloc (in /usr/lib/libglib-2.0.so.0.1400.1)
==15575==    by 0x417150A: g_slice_alloc (in /usr/lib/libglib-2.0.so.0.1400.1)
==15575==    by 0x4137578: g_array_sized_new (in /usr/lib/libglib-2.0.so.0.1400.1)
==15575==    by 0x4137686: g_array_new (in /usr/lib/libglib-2.0.so.0.1400.1)
==15575==    by 0x40971ED: gst_value_init_list_or_array (gstvalue.c:171)
==15575==    by 0x4109644: g_value_init (in /usr/lib/libgobject-2.0.so.0.1400.1)
==15575==    by 0x47427FF: mpegts_packetizer_parse_eit (mpegtspacketizer.c:1475)
==15575==    by 0x473DC54: mpegts_parse_handle_psi (mpegtsparse.c:1153)
==15575==    by 0x473DE29: mpegts_parse_chain (mpegtsparse.c:1219)
==15575==    by 0x4072698: gst_pad_chain_unchecked (gstpad.c:3503)
==15575==    by 0x4072D51: gst_pad_push (gstpad.c:3671)
==15575== 

==18704== 12,207 (760 direct, 11,447 indirect) bytes in 38 blocks are definitely lost in loss record 21 of 25
==18704==    at 0x4021AA4: calloc (vg_replace_malloc.c:279)
==18704==    by 0x415CA5D: g_malloc0 (in /usr/lib/libglib-2.0.so.0.1400.1)
==18704==    by 0x408613A: gst_structure_id_empty_new_with_size (gststructure.c:116)
==18704==    by 0x4086735: gst_structure_new_valist (gststructure.c:238)
==18704==    by 0x40867B1: gst_structure_new (gststructure.c:209)
==18704==    by 0x47402F0: mpegts_packetizer_parse_nit (mpegtspacketizer.c:785)
==18704==    by 0x473DBB6: mpegts_parse_handle_psi (mpegtsparse.c:1092)
==18704==    by 0x473DE29: mpegts_parse_chain (mpegtsparse.c:1219)
==18704==    by 0x4072698: gst_pad_chain_unchecked (gstpad.c:3503)
==18704==    by 0x4072D51: gst_pad_push (gstpad.c:3671)
==18704==    by 0x4725550: gst_base_src_loop (gstbasesrc.c:2051)
==18704==    by 0x408C895: gst_task_func (gsttask.c:192)