Changed default font size.

Using constructor to set font size to 12.

src/kontrast.cpp

@@ -44,6 +44,7 @@ const QDBusArgument &operator>>(const QDBusArgument &arg, Kontrast::ColorRGB &co
 
 Kontrast::Kontrast(KAboutData about, QObject *parent)
     : QObject(parent)
+    , m_fontSize(12)
     , m_about(about)
 {
     setObjectName(QStringLiteral("Kontrast"));

src/kontrast.h

@@ -123,7 +123,7 @@ private:
     QColor m_textColor;
     QColor m_backgroundColor;
     QColor m_grabbedColor;
-    int m_fontSize = 12;
+    int m_fontSize;
     KAboutData m_about;
 
     ContrastQualities getContrastQualities();