check if scconf_find_blocks returned NULL
git-svn-id: https://www.opensc-project.org/svnp/opensc/trunk@2714 c6295689-39f2-0310-b995-f0e70906c6a9
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@ -528,7 +528,8 @@ static int ctapi_init(sc_context_t *ctx, void **reader_data)
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for (i = 0; ctx->conf_blocks[i] != NULL; i++) {
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blocks = scconf_find_blocks(ctx->conf, ctx->conf_blocks[i],
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"reader_driver", "ctapi");
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conf_block = blocks[0];
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if (blocks && blocks[0])
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conf_block = blocks[0];
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free(blocks);
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if (conf_block != NULL)
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break;
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