libavcodec/qtrle.c:119: error: Integer Overflow L2
  ([0, `*s->g.buffer`] - 1):unsigned32.

libavcodec/qtrle.c:107:1: <LHS trace>
105. }
106. 
107. static inline void qtrle_decode_2n4bpp(QtrleContext *s, int row_ptr,
     ^
108.                                        int lines_to_change, int bpp)
109. {

libavcodec/qtrle.c:107:1: Parameter `*s->g.buffer`
105. }
106. 
107. static inline void qtrle_decode_2n4bpp(QtrleContext *s, int row_ptr,
     ^
108.                                        int lines_to_change, int bpp)
109. {

libavcodec/qtrle.c:119:46: Call
117. 
118.     while (lines_to_change--) {
119.         pixel_ptr = row_ptr + (num_pixels * (bytestream2_get_byte(&s->g) - 1));
                                                  ^
120.         CHECK_PIXEL_PTR(0);
121. 

libavcodec/bytestream.h:92:1: Assignment
  90. DEF(unsigned int, be24, 3, AV_RB24, AV_WB24)
  91. DEF(unsigned int, be16, 2, AV_RB16, AV_WB16)
  92. DEF(unsigned int, byte, 1, AV_RB8 , AV_WB8)
      ^
  93. 
  94. #if HAVE_BIGENDIAN

libavcodec/qtrle.c:119:9: Binary operation: ([0, *s->g.buffer] - 1):unsigned32
117. 
118.     while (lines_to_change--) {
119.         pixel_ptr = row_ptr + (num_pixels * (bytestream2_get_byte(&s->g) - 1));
             ^
120.         CHECK_PIXEL_PTR(0);
121. 
