patch 8.1.1582: cannot build with +textprop but without +timers

Problem:    Cannot build with +textprop but without +timers.
Solution:   Add #ifdef. (Ola Söder, closes #4574)
diff --git a/src/popupwin.c b/src/popupwin.c
index b0b67b1..d675a44 100644
--- a/src/popupwin.c
+++ b/src/popupwin.c
@@ -1051,8 +1051,10 @@
     // Deal with options.
     apply_options(wp, argvars[1].vval.v_dict);
 
+#ifdef FEAT_TIMERS
     if (type == TYPE_NOTIFICATION && wp->w_popup_timer == NULL)
 	popup_add_timeout(wp, 3000);
+#endif
 
     popup_adjust_position(wp);
 
diff --git a/src/version.c b/src/version.c
index 042c9c1..2af2912 100644
--- a/src/version.c
+++ b/src/version.c
@@ -778,6 +778,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1582,
+/**/
     1581,
 /**/
     1580,