[Swftools-common] Report a null pointer dereference error when newest swfdump processing malformed swf files using -D option

[123yangke321]

Hi，everybody  When runing the command "swfdump -D malformed.swf" after 
installing the swftools-0.9.2 I got an segment error.Here is the test file 
"malformed.swf", error info and the stack backtrace:
==== Error: Real Filesize (505) doesn't match header Filesize (0) ====[HEADER]  
      File version: 0[HEADER]        File size: 0[HEADER]        Frame rate: 
2.000000[HEADER]        Frame count: 128[HEADER]        Movie width: 
0.00[HEADER]        Movie height: 0.00GetU16() out of bounds: TagID = 4GetU16() 
out of bounds: TagID = 4GetU16() out of bounds: TagID = 4[004]         0 
PLACEOBJECT places id 0000 at depth 0000GetU16() out of bounds: TagID = 
4GetU16() out of bounds: TagID = 4GetBits() out of bounds: TagID = 4, pos=0, 
len=0
Program received signal SIGSEGV, Segmentation fault.0x080608e6 in swf_GetBits 
(t=0x80ec008, nbits=1) at rfxswf.c:213213       for(i=-1;i<m;i++) {(gdb) bt#0  
0x080608e6 in swf_GetBits (t=0x80ec008, nbits=1) at rfxswf.c:213#1  0x08061ee5 
in swf_GetMatrix (address@hidden, address@hidden)    at rfxswf.c:851#2  
0x0804eb28 in handlePlaceObject (tag=0x80ec008,     prefix=0xbfffebfc ' ' 
<repeats 16 times>) at swfdump.c:816#3  0x0804b68a in main (argc=3, 
argv=0xbfffedc4) at swfdump.c:1589(gdb) p t->data$6 = (U8 *) 0x0
It is a null pointer dereference error because the field "data" of TAG t  is 
0x0.
Any suggestion to fix this problem?
Best regards.
Sincerely，Ke Yang