app: don't panic on iOS touch
app: don't panic on iOS touch

Change-Id: Ie19da493d78433170f13577c92e08e539f64aa24
Reviewed-on: https://go-review.googlesource.com/10486
Reviewed-by: Hyang-Ah Hana Kim <d7e82c3c07f92613bcbf9a1e88f6b96c13caa3b0@gmail.com>

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