Removes rest of 'no-else-return' comments.

src/display/font_loader.js

@@ -360,7 +360,10 @@ var FontFaceObject = (function FontFaceObjectClosure() {
   }
   FontFaceObject.prototype = {
     createNativeFontFace: function FontFaceObject_createNativeFontFace() {
-      if (typeof PDFJSDev === 'undefined' || !PDFJSDev.test('MOZCENTRAL')) {
+      if (typeof PDFJSDev !== 'undefined' && PDFJSDev.test('MOZCENTRAL')) {
+        throw new Error('Not implemented: createNativeFontFace');
+      }
+
       if (!this.data) {
         return null;
       }
@@ -376,9 +379,6 @@ var FontFaceObject = (function FontFaceObjectClosure() {
         this.options.fontRegistry.registerFont(this);
       }
       return nativeFontFace;
-      } else { // eslint-disable-line no-else-return
-        throw new Error('Not implemented: createNativeFontFace');
-      }
     },
 
     createFontFaceRule: function FontFaceObject_createFontFaceRule() {

web/pdf_page_view.js

@@ -624,7 +624,8 @@ var PDFPageView = (function PDFPageViewClosure() {
           onRenderContinue: function (cont) { },
           cancel: function () { },
         };
-      } else { // eslint-disable-line no-else-return
+      }
+
       var cancelled = false;
       var ensureNotCancelled = function () {
         if (cancelled) {
@@ -660,7 +661,6 @@ var PDFPageView = (function PDFPageViewClosure() {
           cancelled = true;
         }
       };
-      }
     },
 
     /**