fix bug where default stream reader wrote header for every object

src/UglyToad.PdfPig/Writer/Fonts/Standard14WritingFont.cs

@@ -67,11 +67,11 @@
             };
 
             var token = new DictionaryToken(dictionary);
-
+
             if (reservedIndirect != null)
             {
                 return writer.WriteToken(token, reservedIndirect);
-            }
+            }
 
             var result = writer.WriteToken(token);
 

src/UglyToad.PdfPig/Writer/PdfStreamWriter.cs

@@ -43,6 +43,7 @@
             Stream.WriteByte(196);
             Stream.WriteByte(210);
             Stream.WriteNewLine();
+            Initialized = true;
         }
 
         public void Dispose()