patch 7.4.1583

Problem:    Warning for unitinialized variable.
Solution:   Initialize it. (Dominique)

src/ex_cmds2.c

@@ -1179,7 +1179,7 @@ check_due_timer()
 {
     timer_T	*timer;
     long	this_due;
-    long	next_due;
+    long	next_due = -1;
     proftime_T	now;
     int		did_one = FALSE;
 # ifdef WIN3264

src/version.c

@@ -748,6 +748,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1583,
 /**/
     1582,
 /**/