Fix null handling in escapeHtml method and correct constructor documentation in TranslatorTimings

Author: rousso

src/main/java/eu/europa/ted/efx/util/EfxProfilerReportGenerator.java

@@ -182,6 +182,9 @@ public static String generateProfilerReport(final EfxParser parser, final Decisi
    * @return HTML-escaped text
    */
   private static String escapeHtml(String text) {
+    if (text == null) {
+      return "";
+    }
     return text.replace("&", "&")
         .replace("<", "&lt;")
         .replace(">", "&gt;")

src/main/java/eu/europa/ted/efx/util/TranslatorTimings.java

@@ -11,7 +11,7 @@ public class TranslatorTimings {
     private final long totalTimeMs;
 
     /**
-     * Creates a new TimingData instance with the specified timing measurements.
+     * Creates a new TranslatorTimings instance with the specified timing measurements.
      * 
      * @param preprocessingTimeMs Time spent in EFX preprocessing phase (milliseconds)
      * @param translationTimeMs Time spent in EFX translation phase (milliseconds)