[444545] [validation] Ability to ignore custom html tag - Fix build break

bundles/org.eclipse.wst.html.core/src/org/eclipse/wst/html/core/internal/validate/SyntaxValidator.java

diff --git a/bundles/org.eclipse.wst.html.core/src/org/eclipse/wst/html/core/internal/validate/SyntaxValidator.java b/bundles/org.eclipse.wst.html.core/src/org/eclipse/wst/html/core/internal/validate/SyntaxValidator.java
index d50fe88..7023e2c 100644
--- a/bundles/org.eclipse.wst.html.core/src/org/eclipse/wst/html/core/internal/validate/SyntaxValidator.java
+++ b/bundles/org.eclipse.wst.html.core/src/org/eclipse/wst/html/core/internal/validate/SyntaxValidator.java
@@ -373,13 +373,13 @@
 					HTMLCorePreferenceNames.ELEMENT_NAMES_TO_IGNORE, HTMLCorePreferenceNames.ELEMENT_NAMES_TO_IGNORE_DEFAULT, 
 					fLookupOrder);
 
-			if (ignoreList.trim().isEmpty())
+			if (ignoreList.trim().length() == 0)
 				return result;
 
 			String[] names = ignoreList.split(","); //$NON-NLS-1$
 			for (int i = 0; names != null && i < names.length; i++) {
 				String name = names[i] == null ? null : names[i].trim();
-				if (name != null && !name.isEmpty()) 
+				if (name != null && name.length() > 0)
 					result.add(name.toLowerCase());
 			}
 		}