This patch fixes a silly bug in libcontrol.
It would complaint about column not being a control type.
There was an extra Ctltextbutton3 or similar that was set as nil
in the list of controls. So, _ctllookup would stop looking up
controls.
I changed _ctllookup not to stop on the first nil entry, to avoid this
kind of bug in the future.

I am sorry for the ugly name for the patch. I hit ESC while
sending the "libcontrolfix" patch but patch/create did send
the patch, so I couldnt recreate it with a non nil comment.

hth

Notes:
Thu Jul 1 22:21:45 EDT 2004 jmk
    i've asked sape to look a this because our local libcontrol
    source is newer than that on sources and maybe we should update
    sources.
    
    --jim


Reference: /n/sources/patch/applied/_good_libcontrolfix
Date: Fri Jul  2 18:15:48 CES 2004
Reviewed-by: jmk

--- /sys/src/libcontrol/control.c	Fri Jul  2 18:15:47 2004
+++ /sys/src/libcontrol/control.c	Fri Jul  2 18:15:46 2004
@@ -111,8 +111,8 @@
 {
 	int i;
 
-	for(i=0; i<ntab && tab[i] != nil; i++)
-		if(strcmp(s, tab[i]) == 0)
+	for(i=0; i<ntab; i++)
+		if(tab[i] != nil && strcmp(s, tab[i]) == 0)
 			return i;
 	return -1;
 }
--- /sys/include/control.h	Fri Jul  2 18:15:47 2004
+++ /sys/include/control.h	Fri Jul  2 18:15:47 2004
@@ -26,7 +26,6 @@
 	Ctltabs,
 	Ctltext,
 	Ctltextbutton,
-	Ctltextbutton3,
 	Ctlgroup,		// divider between controls and metacontrols
 	Ctlboxbox,
 	Ctlcolumn,