Fixed handling empty headers (#942) #1259

Job	Run time
packages_split (src/core/etl, etl)	13s
packages_split (src/lib/array-dot, array-dot)	9s
packages_split (src/lib/doctrine-dbal-bulk, doctrine-dbal-bulk)	11s
packages_split (src/lib/parquet, parquet)	10s
packages_split (src/lib/parquet-viewer, parquet-viewer)	15s
packages_split (src/lib/dremel, dremel)	10s
packages_split (src/lib/rdsl, rdsl)	10s
packages_split (src/lib/snappy, snappy)	12s
packages_split (src/adapter/etl-adapter-avro, etl-adapter-avro)	12s
packages_split (src/adapter/etl-adapter-chartjs, etl-adapter-chartjs)	8s
packages_split (src/adapter/etl-adapter-csv, etl-adapter-csv)	9s
packages_split (src/adapter/etl-adapter-doctrine, etl-adapter-doctrine)	9s
packages_split (src/adapter/etl-adapter-elasticsearch, etl-adapter-elasticsearch)	12s
packages_split (src/adapter/etl-adapter-filesystem, etl-adapter-filesystem)	9s
packages_split (src/adapter/etl-adapter-meilisearch, etl-adapter-meilisearch)	13s
packages_split (src/adapter/etl-adapter-google-sheet, etl-adapter-google-sheet)	16s
packages_split (src/adapter/etl-adapter-http, etl-adapter-http)	9s
packages_split (src/adapter/etl-adapter-json, etl-adapter-json)	14s
packages_split (src/adapter/etl-adapter-logger, etl-adapter-logger)	12s
packages_split (src/adapter/etl-adapter-parquet, etl-adapter-parquet)	9s
packages_split (src/adapter/etl-adapter-text, etl-adapter-text)	12s
packages_split (src/adapter/etl-adapter-xml, etl-adapter-xml)	9s
packages_split (src/tools/homebrew, homebrew-flow)	8s
	4m 11s

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