Fix debugging in iOS Simulator

Broke with 3bafbe710f
We need to have the attachPid set with the inferiorPid after we got it
from the iossim tool.

Task-number: QTCREATORBUG-13261
Change-Id: I4f876817bed5566b5025d23416dd85676bc2e68b
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>

src/plugins/debugger/debuggerengine.cpp

@@ -866,6 +866,9 @@ void DebuggerEngine::notifyEngineRemoteSetupFinished(const RemoteSetupResult &re
                 rc.replace(sepIndex + 1, rc.count() - sepIndex - 1,
                            QString::number(result.gdbServerPort));
             }
+        } else if (result.inferiorPid != InvalidPid && startParameters().startMode == AttachExternal) {
+            // e.g. iOS Simulator
+            startParameters().attachPID = result.inferiorPid;
         }
 
         if (result.qmlServerPort != InvalidPort) {