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avcodec/jpeglsdec: check err value for ls_get_code_runterm() 

Fixes infinite loop
Fixes Ticket3086

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit cc0e47b550)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-10-30 23:27:28 +01:00
parent 9a073b1f0f
commit 101e1b36cc
1 changed files with 2 additions and 0 deletions
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libavcodec/jpeglsdec.c
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@ -143,6 +143,8 @@ static inline int ls_get_code_runterm(GetBitContext *gb, JLSState *state, int RI
ret = ret >> 1;
}
if(FFABS(ret) > 0xFFFF)
return -0x10000;
/* update state */
state->A[Q] += FFABS(ret) - RItype;
ret *= state->twonear;