Utils: Fix default argument of ConsoleProcess::Start

The default meta character mode needs to be "Abort" to retain previous
behavior.
Amends acfe45c434.

Change-Id: I1e0c752eddccb0d4821203573241308e56dfb2d3
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/libs/utils/consoleprocess.h

@@ -72,7 +72,7 @@ public:
 
     enum class MetaCharMode { Abort, Ignore };
     bool start(const QString &program, const QString &args,
-               MetaCharMode metaCharMode = MetaCharMode::Ignore);
+               MetaCharMode metaCharMode = MetaCharMode::Abort);
 public slots:
     void stop();