[pango/no-font-fixes: 1/3] fonts: Handle lack of fonts

[Matthias Clasen <matthiasc src gnome org>]

commit b7666befa248ea0cb9716b8e3c3e6b43e9f15ccf
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Sep 26 20:22:44 2022 -0400

    fonts: Handle lack of fonts
    
    Make pango_font_get_scale_factors return 1
    if the font is NULL. This avoids crashes
    in situations where we cannot find any fonts.
    
    Fixes: #701

 pango/fonts.c | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/pango/fonts.c b/pango/fonts.c
index e7bd47805..47671424c 100644
--- a/pango/fonts.c
+++ b/pango/fonts.c
@@ -2871,5 +2871,11 @@ pango_font_get_scale_factors (PangoFont *font,
                               double    *x_scale,
                               double    *y_scale)
 {
+  if (G_UNLIKELY (!font))
+    {
+      *x_scale = *y_scale = .1;
+      return;
+    }
+
   PANGO_FONT_GET_CLASS_PRIVATE (font)->get_scale_factors (font, x_scale, y_scale);
 }