QbsPM: Fix memory leaks

Detected by valgrind

Change-Id: I32008cb91b5b814f67896ad1efb08f1366a38c76
Reviewed-by: Christian Kandeler <christian.kandeler@theqtcompany.com>

src/plugins/qbsprojectmanager/qbsbuildstep.cpp

@@ -436,6 +436,11 @@ QbsBuildStepConfigWidget::QbsBuildStepConfigWidget(QbsBuildStep *step) :
     updateState();
 }
 
+QbsBuildStepConfigWidget::~QbsBuildStepConfigWidget()
+{
+    delete m_ui;
+}
+
 QString QbsBuildStepConfigWidget::summaryText() const
 {
     return m_summary;

src/plugins/qbsprojectmanager/qbsbuildstep.h

@@ -129,6 +129,7 @@ class QbsBuildStepConfigWidget : public ProjectExplorer::BuildStepConfigWidget
     Q_OBJECT
 public:
     QbsBuildStepConfigWidget(QbsBuildStep *step);
+    ~QbsBuildStepConfigWidget();
     QString summaryText() const;
     QString displayName() const;
 

src/plugins/qbsprojectmanager/qbscleanstep.cpp

@@ -272,6 +272,11 @@ QbsCleanStepConfigWidget::QbsCleanStepConfigWidget(QbsCleanStep *step) :
     updateState();
 }
 
+QbsCleanStepConfigWidget::~QbsCleanStepConfigWidget()
+{
+    delete m_ui;
+}
+
 QString QbsCleanStepConfigWidget::summaryText() const
 {
     return m_summary;

src/plugins/qbsprojectmanager/qbscleanstep.h

@@ -104,6 +104,7 @@ class QbsCleanStepConfigWidget : public ProjectExplorer::BuildStepConfigWidget
     Q_OBJECT
 public:
     QbsCleanStepConfigWidget(QbsCleanStep *step);
+    ~QbsCleanStepConfigWidget();
     QString summaryText() const;
     QString displayName() const;
 

src/plugins/qbsprojectmanager/qbsinstallstep.cpp

@@ -291,6 +291,11 @@ QbsInstallStepConfigWidget::QbsInstallStepConfigWidget(QbsInstallStep *step) :
     updateState();
 }
 
+QbsInstallStepConfigWidget::~QbsInstallStepConfigWidget()
+{
+    delete m_ui;
+}
+
 QString QbsInstallStepConfigWidget::summaryText() const
 {
     return m_summary;

src/plugins/qbsprojectmanager/qbsinstallstep.h

@@ -106,6 +106,7 @@ class QbsInstallStepConfigWidget : public ProjectExplorer::BuildStepConfigWidget
     Q_OBJECT
 public:
     QbsInstallStepConfigWidget(QbsInstallStep *step);
+    ~QbsInstallStepConfigWidget();
     QString summaryText() const;
     QString displayName() const;