Fixes for ICQJava

[Pavel Roskin]

Hello!

I'm sending two patches preventing NullPointerExceptions in ICQJava while
registering a new user.

There are still following problems:
1) Dialogs are sometimes too wide on startup
2) Some widgets are incorrectly placed (again, in horizontal direction)
3) NullPointerException in ICQJava classes after getting some events.
4) Some buttons should be disabled, but are not.

Pavel Roskin

Index: libraries/javalib/java/awt/CardLayout.java
===================================================================
RCS file: /home/cvspublic/kaffe/libraries/javalib/java/awt/CardLayout.java,v
retrieving revision 1.6
diff -u -r1.6 CardLayout.java
--- CardLayout.java     1999/03/24 07:56:18     1.6
+++ CardLayout.java     1999/04/20 13:56:14
@@ -194,6 +194,8 @@
 
 public void show ( Container parent, String name) {
        Component nc = (Component)tab.get( name);
+       if ( nc == null )
+               return;
        int cc = parent.getComponentCount();
        
        for ( int i=0; i<cc; i++) {
Index: libraries/javalib/java/awt/widgets/RowCanvas.java
===================================================================
RCS file: /home/cvspublic/kaffe/libraries/javalib/java/awt/widgets/RowCanvas.java,v
retrieving revision 1.6
diff -u -r1.6 RowCanvas.java
--- RowCanvas.java      1999/03/11 21:10:00     1.6
+++ RowCanvas.java      1999/04/20 13:56:14
@@ -241,6 +241,8 @@
 }
 
 int repaintRows( Graphics g, int sIdx, int len) {
+       if ( g == null )
+               return 0;
        int rs = rows.size();
        int d = BORDER_WIDTH;
        int y = d;