PDFBOX-5942: allow empty dict

git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1923461 13f79535-47bb-0310-9956-ffa450edef68

Author: THausherr

fontbox/src/main/java/org/apache/fontbox/type1/Type1Parser.java

@@ -323,6 +323,13 @@ private Map<String, List<Token>> readSimpleDict() throws IOException
         int length = read(Token.INTEGER).intValue();
         read(Token.NAME, "dict");
         readMaybe(Token.NAME, "dup");
+
+        if (readMaybe(Token.NAME, "def") != null)
+        {
+            // PDFBOX-5942 empty dict
+            return dict;
+        }
+
         read(Token.NAME, "begin");
 
         for (int i = 0; i < length; i++)