Qt/Intro: Storage shouldn't grow significantly with pruning enabled

src/qt/intro.cpp

@@ -126,16 +126,18 @@ Intro::Intro(QWidget *parent) :
     ui->storageLabel->setText(ui->storageLabel->text().arg(tr(PACKAGE_NAME)));
     uint64_t pruneTarget = std::max<int64_t>(0, GetArg("-prune", 0));
     requiredSpace = BLOCK_CHAIN_SIZE;
+    QString storageRequiresMsg = tr("At least %1 GB of data will be stored in this directory, and it will grow over time.");
     if (pruneTarget) {
         uint64_t prunedGBs = std::ceil(pruneTarget * 1024 * 1024.0 / GB_BYTES);
         if (prunedGBs <= requiredSpace) {
             requiredSpace = prunedGBs;
+            storageRequiresMsg = tr("Approximately %1 GB of data will be stored in this directory.");
         }
     }
     requiredSpace += CHAIN_STATE_SIZE;
     ui->sizeWarningLabel->setText(
         tr("%1 will download and store a copy of the Bitcoin block chain.").arg(tr(PACKAGE_NAME)) + " " +
-        tr("At least %1 GB of data will be stored in this directory, and it will grow over time.").arg(requiredSpace) + " " +
+        storageRequiresMsg.arg(requiredSpace) + " " +
         tr("The wallet will also be stored in this directory.")
     );
     startThread();