Memory leak in parser.c:827 and 845

[5hadowblad3]

Hi there.

It seems there are potential memory leak in parserSWF_MORPHFILLSTYLES (parser.c:827) and parseSWF_SHAPE (parser.c:845) on the newest master branch 04aee52.

The memory allocated for FillSystyles is not freed after the program ends.
A similar issue happens in the function parseSWF_SHAPE.

These allocation sizes are accessible for the user and thus may lead to a huge amount of memory leak in frequent file transformation on the server.

This is the demo example and the traces reproducible on the master branch.

==85905==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 50616 byte(s) in 1 object(s) allocated from:
    #0 0x7ffa5f1537fa in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x987fa)
    #1 0x458476 in parseSWF_MORPHFILLSTYLES ../../util/parser.c:827

Direct leak of 192 byte(s) in 2 object(s) allocated from:
    #0 0x7ffa5f1537fa in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x987fa)
    #1 0x458b59 in parseSWF_SHAPE ../../util/parser.c:845

Direct leak of 121 byte(s) in 6 object(s) allocated from:
    #0 0x7ffa5f153662 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98662)
    #1 0x48d62d in readBytes ../../util/read.c:252

Direct leak of 1 byte(s) in 1 object(s) allocated from:
    #0 0x7ffa5f153662 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98662)
    #1 0x458167 in parseSWF_MORPHLINESTYLES ../../util/parser.c:755

SUMMARY: AddressSanitizer: 50930 byte(s) leaked in 10 allocation(s).

Reproduce command:

swftophp poc

POC:
parserSWF_MORPHFILLSTYLES_leaks.zip