use Jim_CmdProc in jim_register

The jim_register command just needed to use the type defined by jim.h.

src/helper/command.c

@@ -869,7 +869,8 @@ void process_jim_events(void)
 #endif
 }
 
-void register_jim(struct command_context *cmd_ctx, const char *name, int (*cmd)(Jim_Interp *interp, int argc, Jim_Obj *const *argv), const char *help)
+void register_jim(struct command_context *cmd_ctx, const char *name,
+		Jim_CmdProc cmd, const char *help)
 {
 	Jim_CreateCommand(interp, name, cmd, NULL, NULL);
 

src/helper/command.h

@@ -190,7 +190,8 @@ extern int fast_and_dangerous;
 
 extern Jim_Interp *interp;
 
-void register_jim(struct command_context *context, const char *name, int (*cmd)(Jim_Interp *interp, int argc, Jim_Obj *const *argv), const char *help);
+void register_jim(struct command_context *context, const char *name,
+		Jim_CmdProc cmd, const char *help);
 
 long jim_global_long(const char *variable);