Fix the Size trailer entry in hand written PDFs.

Change-Id: Ib84cc570c2ffaf9fdd49d32bc12c7e6197e130c1
Reviewed-on: https://pdfium-review.googlesource.com/6850
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>
diff --git a/testing/resources/combobox_form.pdf b/testing/resources/combobox_form.pdf
index d543737..5249276 100644
--- a/testing/resources/combobox_form.pdf
+++ b/testing/resources/combobox_form.pdf
@@ -32,6 +32,7 @@
   /Subtype /Type1
   /BaseFont /Helvetica
 >>
+endobj
 7 0 obj
 << /Length 51 >>
 stream
@@ -67,6 +68,7 @@
   /Opt [(Apple) (Banana) (Cherry)]
   /V (Banana)
 >>
+endobj
 10 0 obj
 <<
   /Type /Annot
@@ -88,11 +90,11 @@
 0000000335 00000 n 
 0000000368 00000 n 
 0000000399 00000 n 
-0000000468 00000 n 
-0000000568 00000 n 
-0000000772 00000 n 
-0000000961 00000 n 
-trailer<< /Size 10 /Root 1 0 R >>
+0000000475 00000 n 
+0000000575 00000 n 
+0000000779 00000 n 
+0000000975 00000 n 
+trailer<< /Root 1 0 R /Size 11 >>
 startxref
-1150
+1164
 %%EOF