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_qhash.c b/src/vppinfra/test_qhash.c
index fdbf0bb..68e8cbc 100644
--- a/src/vppinfra/test_qhash.c
+++ b/src/vppinfra/test_qhash.c
@@ -311,6 +311,8 @@
   unformat_input_t i;
   clib_error_t *error;
 
+  clib_mem_init (0, 64ULL << 20);
+
   unformat_init_command_line (&i, argv);
   error = test_qhash_main (&i);
   unformat_free (&i);