patch 7.4.2181

Problem:    Compiler warning for unused variable.
Solution:   Remove it. (Dominique Pelle)

src/ex_cmds2.c

@@ -1256,8 +1256,6 @@ stop_timer(timer_T *timer)
     void
 stop_all_timers(void)
 {
-    timer_T *timer;
-
     while (first_timer != NULL)
 	stop_timer(first_timer);
 }

src/version.c

@@ -763,6 +763,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2181,
 /**/
     2180,
 /**/