kconfig: factor code in menu_get_ext_help()

Cc: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>

scripts/kconfig/menu.c

@@ -10,8 +10,7 @@
 
 #include "lkc.h"
 
-static const char nohelp_text[] = N_(
-	"There is no help available for this option.\n");
+static const char nohelp_text[] = "There is no help available for this option.";
 
 struct menu rootmenu;
 static struct menu **last_entry_ptr;
@@ -595,15 +594,14 @@ struct gstr get_relations_str(struct symbol **sym_arr)
 void menu_get_ext_help(struct menu *menu, struct gstr *help)
 {
 	struct symbol *sym = menu->sym;
+	const char *help_text = nohelp_text;
 
 	if (menu_has_help(menu)) {
 		if (sym->name)
 			str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
-		str_append(help, _(menu_get_help(menu)));
-		str_append(help, "\n");
-	} else {
-		str_append(help, nohelp_text);
+		help_text = menu_get_help(menu);
 	}
+	str_printf(help, "%s\n", _(help_text));
 	if (sym)
 		get_symbol_str(help, sym);
 }