Avoid "bool" variable name

C23 has a type of that name.

cde/programs/dtimsstart/xims.h

@@ -41,6 +41,7 @@
 
 #include	<stdio.h>
 #include	<stdlib.h>
+#include	<stdbool.h>
 #include	<unistd.h>
 #include	<string.h>
 #include	<sys/param.h>
@@ -172,8 +173,6 @@
 #define	ACTION_MASK		0xf0
 
 
-typedef	short		bool;
-
     /* operation states */
 typedef enum {
     State_None = 0,