fix loop

muukii · muukii · commit 40e06e531381 · 2017-02-08T14:57:57.000+09:00
diff --git a/StackScrollView/StackScrollViewCellType.swift b/StackScrollView/StackScrollViewCellType.swift
@@ -31,7 +31,7 @@ extension StackScrollViewCellType where Self: UIView {
   public var stackScrollView: StackScrollView? {
     var superview: UIView? = self
 
-    while !(superview is StackScrollView) {
+    while superview != nil && !(superview is StackScrollView) {
       superview = superview?.superview
     }
 

Original file line number	Diff line number	Diff line change
`@@ -31,7 +31,7 @@ extension StackScrollViewCellType where Self: UIView {`
`31`	`31`	`public var stackScrollView: StackScrollView? {`
`32`	`32`	`var superview: UIView? = self`
`33`	`33`
`34`		`- while !(superview is StackScrollView) {`
	`34`	`+ while superview != nil && !(superview is StackScrollView) {`
`35`	`35`	`superview = superview?.superview`
`36`	`36`	`}`
`37`	`37`