patch 8.2.1042: Vim9: cannot put an operator on the next line

Problem:    Vim9: cannot put an operator on the next line.
Solution:   Require a colon before a range to see if that causes problems.
diff --git a/src/globals.h b/src/globals.h
index a8ff50c..cd15491 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -1790,6 +1790,7 @@
 EXTERN char e_type_req[]	INIT(= N_("E1022: type or initialization required"));
 EXTERN char e_declare_var[]	INIT(= N_("E1016: Cannot declare a %s variable: %s"));
 EXTERN char e_declare_env_var[]	INIT(= N_("E1016: Cannot declare an environment variable: %s"));
+EXTERN char e_colon_required[]	INIT(= N_("E1050: Colon required before a range"));
 #endif
 #if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS)
 EXTERN char e_alloc_color[]	INIT(= N_("E254: Cannot allocate color %s"));