Debugger: Fix MSVC warning

	debuggerruncontrol.h(87) : warning C4273: 'Debugger::createDebuggerRunControl' : inconsistent dll linkage

Change-Id: Id202fcebe0f66a94be3b6efff8ce575a5da3c3e3
Reviewed-by: Christian Stenger <christian.stenger@theqtcompany.com>

src/plugins/debugger/debuggerruncontrol.h

@@ -83,8 +83,8 @@ signals:
 private:
     void handleFinished();
 
-    friend DebuggerRunControl *createDebuggerRunControl(const DebuggerStartParameters &sp,
-                                                        QString *errorMessage);
+    friend DEBUGGER_EXPORT DebuggerRunControl *createDebuggerRunControl(
+            const DebuggerStartParameters &sp, QString *errorMessage);
 
     DebuggerRunControl(ProjectExplorer::RunConfiguration *runConfig,
                        Internal::DebuggerEngine *engine);