nn: fix typo at SampleDriverFloatXNNPACK This patch fixes a typo found in the `SampleDriverFloatXNNPACK`. BUG=None TEST=FEATURES=test USE=-cros-debug emerge-volteer aosp-frameworks-ml-nn Change-Id: I40de11804afd98daa07ab1439f2e3e702b8e4ecd Reviewed-on: https://chromium-review.googlesource.com/c/aosp/platform/frameworks/ml/+/2919287 Reviewed-by: Jim Pollock <[email protected]> Commit-Queue: Jim Pollock <[email protected]> Tested-by: Jim Pollock <[email protected]> Tested-by: Wenhe Li <[email protected]> Auto-Submit: Wenhe Li <[email protected]>