Skipping empty font tables

src/core/fonts.js

@@ -3672,6 +3672,9 @@ var Font = (function FontClosure() {
         if (VALID_TABLES.indexOf(table.tag) < 0) {
           continue; // skipping table if it's not a required or optional table
         }
+        if (table.length === 0) {
+          continue; // skipping empty tables
+        }
         tables[table.tag] = table;
       }
 

test/pdfs/.gitignore

@@ -31,6 +31,7 @@
 !issue1905.pdf
 !rotated.pdf
 !issue1249.pdf
+!issue1171.pdf
 !smaskdim.pdf
 !endchar.pdf
 !type4psfunc.pdf

test/test_manifest.json

@@ -1343,6 +1343,12 @@
       "rounds": 1,
       "type": "eq"
     },
+    {  "id": "issue1171.pdf",
+       "file": "pdfs/issue1171.pdf",
+       "md5": "2a6188a42a5874c7874b88eebd4acaf0",
+       "rounds": 1,
+       "type": "eq"
+    },
     {  "id": "issue3521.pdf",
        "file": "pdfs/issue3521.pdf",
        "md5": "df95d31443e20a38efa29c3a635a045b",