Ensuring the static shim is linked properly

Signed-off-by: Matthew A Johnson <matjoh@microsoft.com>

Author: matajoh

test/vcpkg-consumer/test_static_shim.cpp

@@ -5,11 +5,14 @@
  */
 #include <stdlib.h>
 
+void *sn_malloc(size_t);
+void sn_free(void *);
+
 int main()
 {
-  void* p = malloc(64);
+  void* p = sn_malloc(64);
   if (p == nullptr)
     return 1;
-  free(p);
+  sn_free(p);
   return 0;
 }