Follow project coding style. Issue #2192.

src/gui/lineedit/src/lineedit.cpp

@@ -37,7 +37,7 @@ LineEdit::LineEdit(QWidget *parent)
     clearButton->setToolTip(tr("Clear the text"));
     clearButton->hide();
     connect(clearButton, SIGNAL(clicked()), this, SLOT(clear()));
-  connect(this, SIGNAL(textChanged(const QString&)), this, SLOT(updateCloseButton(const QString&)));
+    connect(this, SIGNAL(textChanged(const QString &)), this, SLOT(updateCloseButton(const QString &)));
 
     clearButtonSizeHintWidth = clearButton->sizeHint().width();
     clearButtonSizeHintHeight = clearButton->sizeHint().height();
@@ -64,7 +64,7 @@ void LineEdit::resizeEvent(QResizeEvent *e)
 #endif
 }
 
-void LineEdit::updateCloseButton(const QString& text)
+void LineEdit::updateCloseButton(const QString &text)
 {
 #if (QT_VERSION < QT_VERSION_CHECK(5, 0, 0))
     clearButton->setVisible(!text.isEmpty());