Fix BUG#23254. Change macro definition of mem_* to allow

passing as function pointers when MEM_LIBC_MALLOC is defined.

CHANGELOG

@@ -22,6 +22,10 @@ HISTORY
 
   ++ Bugfixes:
 
+  2008-05-30 Kieran Mansley
+  * mem.h: Fix BUG#23254.  Change macro definition of mem_* to allow
+    passing as function pointers when MEM_LIBC_MALLOC is defined.
+
   2008-05-09 Jonathan Larmour
   * err.h, err.c, sockets.c: Fix bug #23119: Reorder timeout error code to
     stop it being treated as a fatal error.

src/include/lwip/mem.h

@@ -50,16 +50,16 @@ typedef size_t mem_size_t;
  * allow these defines to be overridden.
  */
 #ifndef mem_free
-#define mem_free(x) free(x)
+#define mem_free free
 #endif
 #ifndef mem_malloc
-#define mem_malloc(x) malloc(x)
+#define mem_malloc malloc
 #endif
 #ifndef mem_calloc
-#define mem_calloc(x, y) calloc(x, y)
+#define mem_calloc calloc
 #endif
 #ifndef mem_realloc
-#define mem_realloc(x, size) (x)
+#define mem_realloc realloc
 #endif
 #else /* MEM_LIBC_MALLOC */