libavcodec/wavpack.c:256: error: Uninitialized Value
  The value read from sl[_] was never initialized.

libavcodec/wavpack.c:256:9: 
254.     }
255.     if (ctx->stereo_in && ctx->hybrid_bitrate) {
256.         int balance = (sl[1] - sl[0] + br[1] + 1) >> 1;
             ^
257.         if (balance > br[0]) {
258.             br[1] = br[0] << 1;

static void update_error_limit(WavpackFrameContext *ctx)
{
    int i, br[2], sl[2];
    for (i = 0; i <= ctx->stereo_in; i++) {
        ctx->ch[i].bitrate_acc += ctx->ch[i].bitrate_delta;
        br[i] = ctx->ch[i].bitrate_acc >> 16;
        sl[i] = LEVEL_DECAY(ctx->ch[i].slow_level);
    }
    if (ctx->stereo_in && ctx->hybrid_bitrate) {
        int balance = (sl[1] - sl[0] + br[1] + 1) >> 1;
        if (balance > br[0]) {
            br[1] = br[0] << 1;
            br[0] = 0;
        } else if (-balance > br[0]) {
            br[0] <<= 1;
            br[1] = 0;
        } else {
            br[1] = br[0] + balance;
            br[0] = br[0] - balance;
        }
    }
    for (i = 0; i <= ctx->stereo_in; i++) {
        if (ctx->hybrid_bitrate) {
            if (sl[i] - br[i] > -0x100)
                ctx->ch[i].error_limit = wp_exp2(sl[i] - br[i] + 0x100);
            else
                ctx->ch[i].error_limit = 0;
        } else {
            ctx->ch[i].error_limit = wp_exp2(br[i]);
        }
    }
}
['static void update_error_limit(WavpackFrameContext *ctx)\n{\n    int i, br[2], sl[2];\n    for (i = 0; i <= ctx->stereo_in; i++) {\n        ctx->ch[i].bitrate_acc += ctx->ch[i].bitrate_delta;\n        br[i] = ctx->ch[i].bitrate_acc >> 16;\n        sl[i] = LEVEL_DECAY(ctx->ch[i].slow_level);\n    }\n    if (ctx->stereo_in && ctx->hybrid_bitrate) {\n        int balance = (sl[1] - sl[0] + br[1] + 1) >> 1;\n        if (balance > br[0]) {\n            br[1] = br[0] << 1;\n            br[0] = 0;\n        } else if (-balance > br[0]) {\n            br[0] <<= 1;\n            br[1] = 0;\n        } else {\n            br[1] = br[0] + balance;\n            br[0] = br[0] - balance;\n        }\n    }\n    for (i = 0; i <= ctx->stereo_in; i++) {\n        if (ctx->hybrid_bitrate) {\n            if (sl[i] - br[i] > -0x100)\n                ctx->ch[i].error_limit = wp_exp2(sl[i] - br[i] + 0x100);\n            else\n                ctx->ch[i].error_limit = 0;\n        } else {\n            ctx->ch[i].error_limit = wp_exp2(br[i]);\n        }\n    }\n}']