patch 7.4.1069
Problem:    Compiler warning for unused argument.
Solution:   Add UNUSED.
diff --git a/src/misc2.c b/src/misc2.c
index 0aad428..d8202f8 100644
--- a/src/misc2.c
+++ b/src/misc2.c
@@ -842,7 +842,7 @@
     char_u *
 alloc_id(size, id)
     unsigned	size;
-    int		id;
+    int		id UNUSED;
 {
 #ifdef FEAT_EVAL
     if (alloc_fail_id == id && alloc_does_fail())
@@ -1007,7 +1007,7 @@
 lalloc_id(size, message, id)
     long_u	size;
     int		message;
-    int		id;
+    int		id UNUSED;
 {
 #ifdef FEAT_EVAL
     if (alloc_fail_id == id && alloc_does_fail())