Fix mismatched memory deallocator in SkeletonRenderer.cpp (#702)

spine-cocos2dx/src/spine/SkeletonRenderer.cpp

@@ -98,7 +98,7 @@ SkeletonRenderer::~SkeletonRenderer () {
 	spSkeleton_dispose(_skeleton);
 	if (_atlas) spAtlas_dispose(_atlas);
 	if (_attachmentLoader) spAttachmentLoader_dispose(_attachmentLoader);
-	delete _worldVertices;
+	delete [] _worldVertices;
 }
 
 void SkeletonRenderer::initWithData (spSkeletonData* skeletonData, bool ownsSkeletonData) {