Valgrind: Fix filter initialization

Change-Id: Ib136a3abd2f0432001016e17f856cf042a8d2dd6
Reviewed-by: Christian Stenger <christian.stenger@theqtcompany.com>

src/plugins/valgrind/memchecktool.cpp

@@ -466,6 +466,9 @@ MemcheckTool::MemcheckTool(QObject *parent)
     toolbar.addAction(m_goNext);
     toolbar.addWidget(filterButton);
     Debugger::registerToolbar(MemcheckPerspectiveId, toolbar);
+
+    updateFromSettings();
+    maybeActiveRunConfigurationChanged();
 }
 
 void MemcheckTool::updateRunActions()