Discards invalid values for Blues

src/fonts.js

@@ -3735,6 +3735,10 @@ var Type1Parser = function type1Parser() {
             case '/OtherBlues':
             case '/FamilyBlues':
             case '/FamilyOtherBlues':
+              var blueArray = readNumberArray(eexecStr, i + 1);
+              if (blueArray.length > 0 && (blueArray.length % 2) == 0)
+                program.properties.privateData[token.substring(1)] = blueArray;
+              break;
             case '/StemSnapH':
             case '/StemSnapV':
               program.properties.privateData[token.substring(1)] =

test/pdfs/issue1685.pdf.link

@@ -0,0 +1 @@
+http://www.agapec.com.br/manual/manual_2007.pdf

test/test_manifest.json

@@ -451,6 +451,14 @@
       "link": true,
       "type": "eq"
     },
+    {  "id": "issue1685",
+      "file": "pdfs/issue1685.pdf",
+      "md5": "b22c3741e6bd0e613d3eb3325ad31f7d",
+      "rounds": 1,
+      "pageLimit": 2,
+      "link": true,
+      "type": "eq"
+    },
     {  "id": "issue1169",
       "file": "pdfs/issue1169.pdf",
       "md5": "3df3ed21fd43ac7fdb21e2015c8a7809",