Added log debug string for category end

Author: p3ndu

src/main/java/jlg/jade/asterix/cat150/Cat150Record.java

@@ -188,6 +188,9 @@ protected int decodeFromByteArray(byte[] input, int offset, int length) {
             appendDebugMsg(this.item251.getDebugString());
         }
 
+        appendDebugMsg("*** End of Category 150 Record ***");
+        appendNewLine();
+
         return offset;
     }