metal : fix memory query under low-memory conditions (#27701)
* metal: Fix memory query under low-memory conditions
* Simply variable name
Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>
* Write it even shorter
Co-authored-by: Niklas Wenzel <dev@nikwen.de>
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Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>
Co-authored-by: Niklas Wenzel <dev@nikwen.de>