Reduce build warnings.

Author: cbirkhold

src/util/ralloc.h

@@ -434,6 +434,17 @@ public:                                                                  \
       return p;                                                          \
    }                                                                     \
                                                                          \
+   static void operator delete(void *p, void *mem_ctx)                   \
+   {                                                                     \
+      /* The object's destructor is guaranteed to have already been      \
+       * called by the delete operator at this point -- Make sure it's   \
+       * not called again.                                               \
+       */                                                                \
+      if (!HAS_TRIVIAL_DESTRUCTOR(TYPE))                                 \
+         ralloc_set_destructor(p, NULL);                                 \
+      ralloc_free(p);                                                    \
+   }                                                                     \
+                                                                         \
    static void operator delete(void *p)                                  \
    {                                                                     \
       /* The object's destructor is guaranteed to have already been      \