refactor: prevent a useless allocation #980

Job	Run time
prepare	11s
build (php-8-2-20-alpine, linux/amd64)	22s
build (php-8-2-20-alpine, linux/386)	8m 12s
build (php-8-2-20-alpine, linux/arm/v6)	17m 6s
build (php-8-2-20-alpine, linux/arm/v7)	20m 54s
build (php-8-2-20-alpine, linux/arm64)	23m 11s
build (php-8-2-20-bookworm, linux/amd64)	5m 5s
build (php-8-2-20-bookworm, linux/386)	4m 12s
build (php-8-2-20-bookworm, linux/arm/v7)	15m 12s
build (php-8-2-20-bookworm, linux/arm64)	13m 56s
build (php-8-3-8-alpine, linux/amd64)	8m 37s
build (php-8-3-8-alpine, linux/386)	8m 18s
build (php-8-3-8-alpine, linux/arm/v6)	18m 41s
build (php-8-3-8-alpine, linux/arm/v7)	23m 2s
build (php-8-3-8-alpine, linux/arm64)	22m 11s
build (php-8-3-8-bookworm, linux/amd64)	5m 0s
build (php-8-3-8-bookworm, linux/386)	4m 18s
build (php-8-3-8-bookworm, linux/arm/v7)	14m 32s
build (php-8-3-8-bookworm, linux/arm64)	14m 5s
push	0s
	3h 47m 5s

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