pgm: Handle IOException in IndexPack command

This avoids we show a stacktrace on the console by default when this
type of exception is thrown during the run method is executed.

Change-Id: Ie8a8388daecb0500f04197462210606c42f143c1
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/IndexPack.java

@@ -45,6 +45,7 @@
 package org.eclipse.jgit.pgm;
 
 import java.io.BufferedInputStream;
+import java.io.IOException;
 
 import org.eclipse.jgit.internal.storage.file.ObjectDirectoryPackParser;
 import org.eclipse.jgit.lib.ObjectInserter;
@@ -62,7 +63,7 @@ class IndexPack extends TextBuiltin {
 
 	/** {@inheritDoc} */
 	@Override
-	protected void run() throws Exception {
+	protected void run() {
 		BufferedInputStream in = new BufferedInputStream(ins);
 		try (ObjectInserter inserter = db.newObjectInserter()) {
 			PackParser p = inserter.newPackParser(in);
@@ -73,6 +74,8 @@ class IndexPack extends TextBuiltin {
 			}
 			p.parse(new TextProgressMonitor(errw));
 			inserter.flush();
+		} catch (IOException e) {
+			throw die(e.getMessage(), e);
 		}
 	}
 }