refactor: extract variable

Author: zhangzhonghe

src/core/vdom/create-element.ts

@@ -146,9 +146,14 @@ function applyNS(vnode, ns, force?: boolean) {
     ns = undefined
     force = true
   }
-  if (isDef(vnode.children)) {
-    for (let i = 0, l = vnode.children.length; i < l; i++) {
-      const child = vnode.children[i]
+  const children =
+    vnode.children ||
+    // #11315
+    (vnode.componentOptions && vnode.componentOptions.children)
+
+  if (isDef(children)) {
+    for (let i = 0, l = children.length; i < l; i++) {
+      const child = children[i]
       if (
         isDef(child.tag) &&
         (isUndef(child.ns) || (isTrue(force) && child.tag !== 'svg'))
@@ -157,17 +162,6 @@ function applyNS(vnode, ns, force?: boolean) {
       }
     }
   }
-
-  // #11315
-  if (isObject(vnode.componentOptions) && isDef(vnode.componentOptions.children)) {
-    for (var i = 0, l = vnode.componentOptions.children.length; i < l; i++) {
-      var child = vnode.componentOptions.children[i]
-      if (isDef(child.tag) && (
-        isUndef(child.ns) || (isTrue(force) && child.tag !== 'svg'))) {
-        applyNS(child, ns, force)
-      }
-    }
-  }
 }
 
 // ref #5318