make sccache -s always return current cache size #2419
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I think this name makes more sense, given that this type holds a lazily initialized LRU cache
sccache server disk cache is usually initiated by the first compilation request. If `sccache -s` is issued before then, sccache will not return the currently occupied cache size This PR fixes that
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sccache server disk cache is usually initiated by the first compilation request. If
sccache -sis issued before then, sccache will not return the currently occupied cache size. This PR fixes that by querying the underlying LruDiskCache incurrent_size(). I don't think there are performance implications of this, but I am not sure.I also renamed LazyDiskCache to LazyLruDiskCache, because I think the name is more clear. Let me know if you want me to revert that change