extensions table: Avoid NPE when passed null values for columns

Author: scop

NEWS.txt

@@ -15,7 +15,7 @@ Enhancements:
 
 Bug fixes:
 - Fix exception when opening the PKCS#11 provider selection dialog.
-- Fix exception with null alias values when rendering key store table.
+- Fix exception with nulls when rendering key store and extensions tables.
 
 Miscellaneous:
 - Generated X.509 certificates are now version 3 ones.

src/main/net/sf/portecle/ExtensionsTableCellRend.java

@@ -60,7 +60,7 @@ public Component getTableCellRendererComponent(JTable jtExtensions, Object value
 		{
 			ImageIcon icon;
 
-			if (((Boolean) value))
+			if (value != null && (Boolean) value)
 			{
 				icon = new ImageIcon(
 				    getClass().getResource(RB.getString("ExtensionsTableCellRend.CriticalExtension.image")));
@@ -78,7 +78,7 @@ public Component getTableCellRendererComponent(JTable jtExtensions, Object value
 			cell.setVerticalAlignment(CENTER);
 			cell.setHorizontalAlignment(CENTER);
 		}
-		else
+		else if (value != null)
 		{
 			// Just use toString of object as text
 			cell.setText(value.toString());