#41: Null pointer fix in LexUtils.getRootException(Throwable ex)

Author: naturalprogrammer

spring-lemon-exceptions/src/main/java/com/naturalprogrammer/spring/lemon/exceptions/util/LexUtils.java

@@ -158,7 +158,10 @@ public static String getExceptionId(Throwable ex) {
 
 
 	private static Throwable getRootException(Throwable ex) {
-		
+
+		if (ex == null)
+			return null;
+
 		while(ex.getCause() != null)
 			ex = ex.getCause();