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libopencv: Check kernel_str life cycle
The string might or might not be set depending if there are args and in case of error it must be freed nonetheless. CC: libav-stable@libav.org Bug-Id: CID 739878 / CID 739882
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@ -261,19 +261,25 @@ static av_cold int dilate_init(AVFilterContext *ctx, const char *args)
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OCVContext *s = ctx->priv;
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DilateContext *dilate = s->priv;
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char default_kernel_str[] = "3x3+0x0/rect";
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char *kernel_str;
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char *kernel_str = NULL;
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const char *buf = args;
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int ret;
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dilate->nb_iterations = 1;
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if (args)
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if (args) {
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kernel_str = av_get_token(&buf, "|");
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if ((ret = parse_iplconvkernel(&dilate->kernel,
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*kernel_str ? kernel_str : default_kernel_str,
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ctx)) < 0)
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return ret;
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if (!kernel_str)
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return AVERROR(ENOMEM);
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}
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ret = parse_iplconvkernel(&dilate->kernel,
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(!kernel_str || !*kernel_str) ? default_kernel_str
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: kernel_str,
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ctx);
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av_free(kernel_str);
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if (ret < 0)
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return ret;
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sscanf(buf, "|%d", &dilate->nb_iterations);
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av_log(ctx, AV_LOG_VERBOSE, "iterations_nb:%d\n", dilate->nb_iterations);
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