fix warnings - qprocess needs a qcoreapp instance

Change-Id: Icf36c2e76595d8f2ed470da13e78c465cfa962f9
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

tests/auto/corelib/io/qprocess/testForwarding/main.cpp

@@ -39,10 +39,13 @@
 **
 ****************************************************************************/
 
+#include <QtCore/QCoreApplication>
 #include <QtCore/QProcess>
 
-int main()
+int main(int argc, char **argv)
 {
+    QCoreApplication app(argc, argv);
+
 #ifndef QT_NO_PROCESS
     QProcess process;
     process.setProcessChannelMode(QProcess::ForwardedChannels);