Replace the linked test-case for issue 3879 with a reduced test-case

Re: issue 3879 and PR 3880.

test/pdfs/.gitignore

@@ -27,6 +27,7 @@
 !sizes.pdf
 !javauninstall-7r.pdf
 !issue3205r.pdf
+!issue3879r.pdf
 !close-path-bug.pdf
 !issue1293r.pdf
 !issue6541.pdf

test/pdfs/issue3879.pdf.link

@@ -1 +0,0 @@
-http://particuliers.lcl.fr/quotidien/cartes/simplifier_quotidien/carte-visa-cleo/Ressources/pdf/dispositions_generales_cb_cleo.pdf

test/pdfs/issue3879r.pdf

@@ -0,0 +1,103 @@
+%PDF-1.7
+%âãÏÓ
+1 0 obj 
+<<
+/Pages 2 0 R
+/Type /Catalog
+>>
+endobj 
+2 0 obj 
+<<
+/Kids [3 0 R]
+/Count 1
+/Type /Pages
+>>
+endobj 
+3 0 obj 
+<<
+/Parent 2 0 R
+/MediaBox [0 0 200 50]
+/Resources 
+<<
+/XObject 
+<<
+/Fm1 4 0 R
+>>
+/Font 
+<<
+/F1 5 0 R
+>>
+>>
+/Contents 6 0 R
+/Type /Page
+>>
+endobj 
+5 0 obj 
+<<
+/BaseFont /Times-Roman
+/Subtype /Type1
+/Encoding /WinAnsiEncoding
+/Type /Font
+>>
+endobj 
+4 0 obj 
+<<
+/Group 
+<<
+/CS /DeviceCMYK
+/K false
+/Type /Group
+/I false
+/S /Transparency
+>>
+/Matrix [1.0 0.0 0.0 1.0 0.0 0.0]
+/Subtype /Form
+/Length 55
+/Resources 
+<<
+>>
+/BBox [542.117 521.691 827.117 384.691]
+>>
+stream
+q
+0 0 0 1 k
+1 i 
+598.927 507.355 174.96 -112.68 re
+f
+Q
+
+endstream 
+endobj 
+6 0 obj 
+<<
+/Length 53
+>>
+stream
+q
+/Fm1 Do
+Q
+BT
+10 20 TD
+/F1 20 Tf
+(Issue 3879) Tj
+ET
+
+endstream 
+endobj xref
+0 7
+0000000000 65535 f 
+0000000015 00000 n 
+0000000066 00000 n 
+0000000125 00000 n 
+0000000382 00000 n 
+0000000281 00000 n 
+0000000675 00000 n 
+trailer
+
+<<
+/Root 1 0 R
+/Size 7
+>>
+startxref
+780
+%%EOF

test/test_manifest.json

@@ -67,12 +67,10 @@
        "type": "eq"
     },
     {  "id": "issue3879",
-       "file": "pdfs/issue3879.pdf",
+       "file": "pdfs/issue3879r.pdf",
-       "md5": "1cd1f1c3271515a14e65ff2980e14663",
+       "md5": "756cdaf5eb54c7d78b0aa737236b9a4f",
        "rounds": 1,
-       "link": true,
+       "link": false,
-       "firstPage": 2,
-       "lastPage": 2,
        "type": "eq"
     },
     {  "id": "issue3885",