Simplify for loop

.nycrc

@@ -1,9 +1,9 @@
 {
   "check-coverage": true,
-  "lines": 97.83,
+  "lines": 97.85,
   "functions": 94.33,
-  "branches": 94.88,
-  "statements": 97.82,
+  "branches": 94.99,
+  "statements": 97.86,
   "include": [
     "src/**/*.ts"
   ],

src/file/file.ts

@@ -139,11 +139,8 @@ export class File {
         }
 
         if (options.footnotes) {
+            // tslint:disable-next-line: forin
             for (const key in options.footnotes) {
-                if (!options.footnotes[key]) {
-                    continue;
-                }
-
                 this.footnotesWrapper.View.createFootNote(parseFloat(key), options.footnotes[key].children);
             }
         }