libavformat/wav.c:135: error: Uninitialized Value
  The value read from size was never initialized.

libavformat/wav.c:135:5: 
133.         url_fseek(pb, size, SEEK_CUR);
134.     }
135.     return size;
         ^
136. }
137. 

static int64_t find_tag(ByteIOContext *pb, uint32_t tag1)
{
    unsigned int tag;
    int64_t size;
    for(;;) {
        if (url_feof(pb))
            return -1;
        tag = get_le32(pb);
        size = get_le32(pb);
        if (tag == tag1)
            break;
        url_fseek(pb, size, SEEK_CUR);
    }
    return size;
}
['static int64_t find_tag(ByteIOContext *pb, uint32_t tag1)\n{\n    unsigned int tag;\n    int64_t size;\n    for(;;) {\n        if (url_feof(pb))\n            return -1;\n        tag = get_le32(pb);\n        size = get_le32(pb);\n        if (tag == tag1)\n            break;\n        url_fseek(pb, size, SEEK_CUR);\n    }\n    return size;\n}']