structs: move SLOT_CACHE_SIZE macro.

Only struct.c refers to this symbol, and so only struct.c
needs to be recompiled when someone experiments with different
values.

* lib.h (SLOT_CACHE_SIZE): Macro deleted here.

* struct.c (SLOT_CACHE_SIZE): Macro moved here.

2 files changed, 1 insertions, 2 deletions

diff --git a/lib.h b/lib.h
index 403a18de..d960e5f4 100644
--- a/lib.h
+++ b/lib.h
@@ -124,8 +124,6 @@ struct string {
   val alloc;
 };
 
-#define SLOT_CACHE_SIZE 8
-
 typedef struct {
   cnum id;
   cnum slot;
diff --git a/struct.c b/struct.c
index 27853839..faaa5aa9 100644
--- a/struct.c
+++ b/struct.c
@@ -60,6 +60,7 @@
 
 #define STATIC_SLOT_BASE 0x10000000
 
+#define SLOT_CACHE_SIZE 8
 
 struct stslot {
   val home_type;