Fixed lack of conversion of NSErrors.
Fixed lack of conversion of NSErrors.

oblador/react-native-keychain,oblador/react-native-keychain,oblador/react-native-keychain,pkibbey/react-native-keychain,oblador/react-native-keychain,tmitchel2/react-native-keychain,oblador/react-native-keychain,oblador/react-native-keychain,VctrySam/react-native-keychain