media-io: Fix check before passing pointer to av_freep
Found by clang-3.7 (trunk 236075) via -Wpointer-bool-conversion: warning: address of array 'rs->output_buffer' will always evaluate to 'true'
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@ -121,7 +121,7 @@ void audio_resampler_destroy(audio_resampler_t *rs)
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if (rs) {
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if (rs) {
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if (rs->context)
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if (rs->context)
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swr_free(&rs->context);
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swr_free(&rs->context);
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if (rs->output_buffer)
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if (rs->output_buffer[0])
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av_freep(&rs->output_buffer[0]);
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av_freep(&rs->output_buffer[0]);
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bfree(rs);
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bfree(rs);
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