Added check to avoid adding a null font

- found and fix provided by @CSerX - fixes #528
svg-net · Jul 31, 2019 · 9d052be · 9d052be
1 parent dcb7951
commit 9d052be
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/Source/SvgFontManager.cs b/Source/SvgFontManager.cs
@@ -53,7 +53,8 @@ public static FontFamily FindFont(string name)
             if (SystemFonts.TryGetValue(name.ToLower(), out ff)) return ff;
             if (FontLoaderCallback == null) return null;
             var ff2 = FontLoaderCallback(name);
-            SystemFonts.Add(name.ToLower(), ff2);
+            if (ff2 != null)
+                SystemFonts.Add(name.ToLower(), ff2);
             return ff2;
         }
     }