[LyX/2.3.x] Backport GuiFontLoader deprecation warning fixes

[Juergen Spitzmueller]

commit 85ece5fb3d3e6783fc0cb360f362796e82ecc62e
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Sat Mar 13 12:04:58 2021 +0100

    Backport GuiFontLoader deprecation warning fixes
---
 src/frontends/qt4/GuiFontLoader.cpp |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/src/frontends/qt4/GuiFontLoader.cpp b/src/frontends/qt4/GuiFontLoader.cpp
index 39e7907..130e5b9 100644
--- a/src/frontends/qt4/GuiFontLoader.cpp
+++ b/src/frontends/qt4/GuiFontLoader.cpp
@@ -226,6 +226,7 @@ QFont symbolFont(QString const & family, bool * ok)
 		return font;
 	}
 
+#if (QT_VERSION < QT_VERSION_CHECK(5, 0, 0))
 	// A simple setFamily() fails on Qt 2
 
 	QString const raw = rawName(family);
@@ -237,6 +238,7 @@ QFont symbolFont(QString const & family, bool * ok)
 		*ok = true;
 		return font;
 	}
+#endif
 
 	LYXERR_NOPOS(Debug::FONT, " FAILED :-(");
 	*ok = false;
@@ -370,7 +372,9 @@ QFont makeQFont(FontInfo const & f)
 	else
 		LYXERR(Debug::FONT, "This font is NOT an exact match");
 
+#if (QT_VERSION < QT_VERSION_CHECK(5, 0, 0))
 	LYXERR(Debug::FONT, "XFLD: " << font.rawName());
+#endif
 
 	font.setPointSizeF(f.realSize() * lyxrc.currentZoom / 100.0);