Fixing bug in GenericsHighlightUtil which caused error while parsing code like "Map<String, String> map = new LinkedHashMap<>();" due to incorrect refactoring of GenericsHighlightUtil.checkReferenceTypeArgumentList()

Fixing bug in GenericsHighlightUtil which caused error while parsing code like "Map<String, String> map = new LinkedHashMap<>();" due to incorrect refactoring of GenericsHighlightUtil.checkReferenceTypeArgumentList() #335