Merge pull request #2451 from brendandahl/opentype-warn

Warn on opentype fonts.

src/fonts.js

@@ -2303,6 +2303,11 @@ var Font = (function FontClosure() {
       type = 'Type1';
     if (subtype == 'CIDFontType0C' && type != 'CIDFontType0')
       type = 'CIDFontType0';
+    // XXX: Temporarily change the type for open type so we trigger a warning.
+    // This should be removed when we add support for open type.
+    if (subtype === 'OpenType') {
+      type = 'OpenType';
+    }
 
     var data;
     switch (type) {
@@ -2327,7 +2332,7 @@ var Font = (function FontClosure() {
         break;
 
       default:
-        warn('Font ' + properties.type + ' is not supported');
+        warn('Font ' + type + ' is not supported');
         break;
     }