Fix NPE

Author: XiaowenVC

sonar-swift-plugin/src/main/java/org/sonar/plugins/swift/surefire/data/SurefireStaxHandler.java

@@ -121,6 +121,9 @@ private static UnitTestResult parseTestResult(SMInputCursor testCaseCursor) thro
 
     private static long getTimeAttributeInMS(String value) throws XMLStreamException {
         // hardcoded to Locale.ENGLISH see http://jira.codehaus.org/browse/SONAR-602
+		if (value == null) {
+			return 0L;
+		}
         try {
             Double time = ParsingUtils.parseNumber(value, Locale.ENGLISH);
             return !Double.isNaN(time) ? (long) ParsingUtils.scaleValue(time * 1000, 3) : 0L;