Bug 1267524 Part 2 - Use member initializer list for nsStyleXUL. r=heycam

MozReview-Commit-ID: FHb0yTvYAXR

--HG--
extra : rebase_source : 6158f8d7ec97ef93dd0ff7efedea2c0bfb65b10f

layout/style/nsStyleStruct.cpp

@@ -757,15 +757,15 @@ nsStyleList::sNoneQuotes;
 // nsStyleXUL
 //
 nsStyleXUL::nsStyleXUL(StyleStructContext aContext)
+  : mBoxFlex(0.0f)
+  , mBoxOrdinal(1)
+  , mBoxAlign(NS_STYLE_BOX_ALIGN_STRETCH)
+  , mBoxDirection(NS_STYLE_BOX_DIRECTION_NORMAL)
+  , mBoxOrient(NS_STYLE_BOX_ORIENT_HORIZONTAL)
+  , mBoxPack(NS_STYLE_BOX_PACK_START)
+  , mStretchStack(true)
 {
   MOZ_COUNT_CTOR(nsStyleXUL);
-  mBoxAlign  = NS_STYLE_BOX_ALIGN_STRETCH;
-  mBoxDirection = NS_STYLE_BOX_DIRECTION_NORMAL;
-  mBoxFlex = 0.0f;
-  mBoxOrient = NS_STYLE_BOX_ORIENT_HORIZONTAL;
-  mBoxPack   = NS_STYLE_BOX_PACK_START;
-  mBoxOrdinal = 1;
-  mStretchStack = true;
 }
 
 nsStyleXUL::~nsStyleXUL()