Fix Stripe json body error handling.

donations/lib/src/main/java/org/signal/donations/StripeApi.kt

@@ -131,11 +131,12 @@ class StripeApi(
   fun getSetupIntent(stripeIntentAccessor: StripeIntentAccessor): StripeSetupIntent {
     return when (stripeIntentAccessor.objectType) {
       StripeIntentAccessor.ObjectType.SETUP_INTENT -> get("setup_intents/${stripeIntentAccessor.intentId}?client_secret=${stripeIntentAccessor.intentClientSecret}").use {
+        val body = it.body()?.string()
         try {
-          objectMapper.readValue(it.body()!!.string())
+          objectMapper.readValue(body!!)
         } catch (e: InvalidDefinitionException) {
           Log.w(TAG, "Failed to parse JSON for StripeSetupIntent.")
-          ResponseFieldLogger.logFields(objectMapper, it.body()?.string())
+          ResponseFieldLogger.logFields(objectMapper, body)
           throw StripeError.FailedToParseSetupIntentResponseError(e)
         } catch (e: Exception) {
           Log.w(TAG, "Failed to read value from JSON.", e, true)
@@ -152,11 +153,12 @@ class StripeApi(
   fun getPaymentIntent(stripeIntentAccessor: StripeIntentAccessor): StripePaymentIntent {
     return when (stripeIntentAccessor.objectType) {
       StripeIntentAccessor.ObjectType.PAYMENT_INTENT -> get("payment_intents/${stripeIntentAccessor.intentId}?client_secret=${stripeIntentAccessor.intentClientSecret}").use {
+        val body = it.body()?.string()
         try {
-          objectMapper.readValue(it.body()!!.string())
+          objectMapper.readValue(body!!)
         } catch (e: InvalidDefinitionException) {
           Log.w(TAG, "Failed to parse JSON for StripePaymentIntent.")
-          ResponseFieldLogger.logFields(objectMapper, it.body()?.string())
+          ResponseFieldLogger.logFields(objectMapper, body)
           throw StripeError.FailedToParsePaymentIntentResponseError(e)
         } catch (e: Exception) {
           Log.w(TAG, "Failed to read value from JSON.", e, true)