[Qt] move SubstituteFonts() above ToolTipToRichTextFilter

- doesn't belong to the ToolTipToRichTextFilter class so move it up

src/qt/guiutil.cpp

@@ -377,12 +377,6 @@ void openDebugLogfile()
         QDesktopServices::openUrl(QUrl::fromLocalFile(boostPathToQString(pathDebug)));
 }
 
-ToolTipToRichTextFilter::ToolTipToRichTextFilter(int size_threshold, QObject *parent) :
-    QObject(parent), size_threshold(size_threshold)
-{
-
-}
-
 void SubstituteFonts()
 {
 #if defined(Q_OS_MAC)
@@ -403,6 +397,13 @@ void SubstituteFonts()
 #endif
 }
 
+ToolTipToRichTextFilter::ToolTipToRichTextFilter(int size_threshold, QObject *parent) :
+    QObject(parent),
+    size_threshold(size_threshold)
+{
+
+}
+
 bool ToolTipToRichTextFilter::eventFilter(QObject *obj, QEvent *evt)
 {
     if(evt->type() == QEvent::ToolTipChange)