Fix potential NPE in PaymentMethodsActivity #1154
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If the user enables airplane mode, access the Payment Methods screen, and rotates the screen, an NPE will be thrown because `mMaskedCardAdapter` is null when referenced in `onSaveInstanceState()`. Fixes #1152
jemerick-stripe
approved these changes
Jul 9, 2019
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Summary
If the user enables airplane mode, access the Payment Methods screen,
and rotates the screen, an NPE will be thrown because
mMaskedCardAdapteris null when referenced in
onSaveInstanceState().Motivation
Fixes #1152
Testing
Manually tested