Compile vppinfra on macOS

Add missing calls to clib_mem_init to vppinfra test codes.

Change-Id: I53ffc6fc287d1a378065bb86c18b6e995ecdb775
Signed-off-by: Damjan Marion <damarion@cisco.com>
Signed-off-by: Dave Barach <dave@barachs.net>
diff --git a/src/vppinfra/test_phash.c b/src/vppinfra/test_phash.c
index 9ed2ac7..47711c2 100644
--- a/src/vppinfra/test_phash.c
+++ b/src/vppinfra/test_phash.c
@@ -132,6 +132,8 @@
   unformat_input_t i;
   int res;
 
+  clib_mem_init (0, 64ULL << 20);
+
   verbose = (argc > 1);
   unformat_init_command_line (&i, argv);
   res = test_phash_main (&i);