crypto/mem.c: simplify OPENSSL_SMALL_FOOTPRINT handling in CRYPTO_aligned_alloc

There is no need to initialise neither *freeptr, as it is initialised
already, nor ret, as NULL can be simply returned instead.

Signed-off-by: Eugene Syromiatnikov <esyr@openssl.org>

crypto/mem.c

@@ -236,8 +236,7 @@ void *CRYPTO_aligned_alloc(size_t num, size_t alignment, void **freeptr,
     *freeptr = NULL;
 
 #if defined(OPENSSL_SMALL_FOOTPRINT)
-    ret = *freeptr = NULL;
-    return ret;
+    return NULL;
 #endif
 
     /* Allow non-malloc() allocations as long as no malloc_impl is provided. */