Bugfix: Avoid trying to parse outputs that aren't relevant to CWalletTx::GetAmounts
Bugfix: Avoid trying to parse outputs that aren't relevant to CWalletTx::GetAmounts

This fixes a warning when an output we aren't concerned with can't be parsed.

Rebased-from: a8c1df93c87f089bfb80d959724a65b714b2aaca 0.8.x

MidasPaymentLTD/midascoin,MidasPaymentLTD/midascoin,MidasPaymentLTD/midascoin,MidasPaymentLTD/midascoin,MidasPaymentLTD/midascoin