patch 7.4.2218
Problem:    Can't build with +timers when +digraph is not included.
Solution:   Change #ifdef for e_number_exp. (Damien)
diff --git a/src/globals.h b/src/globals.h
index ec6e152..16fd53f 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -1509,7 +1509,7 @@
 EXTERN char_u e_nowrtmsg[]	INIT(= N_("E37: No write since last change (add ! to override)"));
 EXTERN char_u e_nowrtmsg_nobang[]   INIT(= N_("E37: No write since last change"));
 EXTERN char_u e_null[]		INIT(= N_("E38: Null argument"));
-#ifdef FEAT_DIGRAPHS
+#if defined(FEAT_DIGRAPHS) || defined(FEAT_TIMERS)
 EXTERN char_u e_number_exp[]	INIT(= N_("E39: Number expected"));
 #endif
 #ifdef FEAT_QUICKFIX