swift compiler crash fix

tanner0101 · tanner0101 · commit 5da79d3eb9dc · 2016-09-27T19:10:03.000-04:00
diff --git a/Sources/Leaf/Tag/Models/Extend.swift b/Sources/Leaf/Tag/Models/Extend.swift
@@ -35,7 +35,7 @@ extension Leaf {
                 return
             }
 
-            template.parameters.first?.constant.flatMap { importName in
+            if let importName = template.parameters.first?.constant {
                 if let exported = exports[importName] {
                     comps += exported.components.array
                 } else if let fallback = template.body {

Original file line number	Diff line number	Diff line change
`@@ -35,7 +35,7 @@ extension Leaf {`
`35`	`35`	`return`
`36`	`36`	`}`
`37`	`37`
`38`		`- template.parameters.first?.constant.flatMap { importName in`
	`38`	`+ if let importName = template.parameters.first?.constant {`
`39`	`39`	`if let exported = exports[importName] {`
`40`	`40`	`comps += exported.components.array`
`41`	`41`	`} else if let fallback = template.body {`