Make sure LogPrintf strings are line-terminated

Fix the cases where LogPrint[f] was accidentally called without line
terminator, which resulted in concatenated log lines.

(see e.g. #6492)

src/wallet/crypter.cpp

@@ -186,7 +186,7 @@ bool CCryptoKeyStore::Unlock(const CKeyingMaterial& vMasterKeyIn)
         }
         if (keyPass && keyFail)
         {
-            LogPrintf("The wallet is probably corrupted: Some keys decrypt but not all.");
+            LogPrintf("The wallet is probably corrupted: Some keys decrypt but not all.\n");
             assert(false);
         }
         if (keyFail || !keyPass)