Fix wild frees and leak of fs in test-conf.
Reported by AddressSanitizer when running test-conf. The `query`, `result`, and `result_fs` were not initialized to NULL so could result in a wild free when first initialized. The `method` was also not initialized to NULL so comparisons could be made against random data if it had not yet been assigned. The outer `fs` was never destroyed, but is also not used, so remove.
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