libavcodec/webp.c:249: error: Uninitialized Value
  The value read from re_size_plus8 was never initialized.

libavcodec/webp.c:249:9: 
247. 
248.     if (n < 0) {
249.         LAST_SKIP_BITS(re, gb, 8);
             ^
250.         UPDATE_CACHE(re, gb);
251. 

static av_always_inline int webp_get_vlc(GetBitContext *gb, VLC_TYPE (*table)[2])
{
    int n, nb_bits;
    unsigned int index;
    int code;
    OPEN_READER(re, gb);
    UPDATE_CACHE(re, gb);
    index = SHOW_UBITS(re, gb, 8);
    index = ff_reverse[index];
    code  = table[index][0];
    n     = table[index][1];
    if (n < 0) {
        LAST_SKIP_BITS(re, gb, 8);
        UPDATE_CACHE(re, gb);
        nb_bits = -n;
        index = SHOW_UBITS(re, gb, nb_bits);
        index = (ff_reverse[index] >> (8 - nb_bits)) + code;
        code  = table[index][0];
        n     = table[index][1];
    }
    SKIP_BITS(re, gb, n);
    CLOSE_READER(re, gb);
    return code;
}
['static av_always_inline int webp_get_vlc(GetBitContext *gb, VLC_TYPE (*table)[2])\n{\n    int n, nb_bits;\n    unsigned int index;\n    int code;\n    OPEN_READER(re, gb);\n    UPDATE_CACHE(re, gb);\n    index = SHOW_UBITS(re, gb, 8);\n    index = ff_reverse[index];\n    code  = table[index][0];\n    n     = table[index][1];\n    if (n < 0) {\n        LAST_SKIP_BITS(re, gb, 8);\n        UPDATE_CACHE(re, gb);\n        nb_bits = -n;\n        index = SHOW_UBITS(re, gb, nb_bits);\n        index = (ff_reverse[index] >> (8 - nb_bits)) + code;\n        code  = table[index][0];\n        n     = table[index][1];\n    }\n    SKIP_BITS(re, gb, n);\n    CLOSE_READER(re, gb);\n    return code;\n}']