Issue 4353 - Remove non standard for each syntax

utils/jstypes.js

Index: utils/jstypes.js
diff --git a/utils/jstypes.js b/utils/jstypes.js
index 7b0716c24bf460a4ddada911c2ce454fdf108825..f5aa4c84e9e373a87f8d8b9d6da43078837169b6 100644
--- a/utils/jstypes.js
+++ b/utils/jstypes.js
@@ -4,7 +4,7 @@
 
 function divine_inheritance(clazz, constants) {
   let aliases = {};
-  for each (let c in constants) {
+  for (let c of constants) {
     aliases[c.name] = c.init;
   }
 
@@ -17,19 +17,19 @@ function divine_inheritance(clazz, constants) {
 
     if (!clazz.inherits)
       clazz.inherits = [];
-    for each (let iface in xpcom.kids[1].kids)
+    for (let iface of xpcom.kids[1].kids)
       clazz.inherits.push(iface.atom);
     return;
   }
-  
+
   if ("QueryInterface" in clazz.functions) {
     if (!clazz.inherits)
       clazz.inherits = [];
     function findInterfaces(ast) {
-	    if (ast.op == JSOP_GETPROP && ast.kids[0]) {
-		    let check = ast.kids[0];
-		    if (check.atom == "interfaces" && check.kids[0] &&
-	  	  		check.kids[0].atom == "Components") {
+      if (ast.op == JSOP_GETPROP && ast.kids[0]) {
+        let check = ast.kids[0];
+        if (check.atom == "interfaces" && check.kids[0] &&
+            check.kids[0].atom == "Components") {
           clazz.inherits.push(ast.atom);
         }
       }