crypt32: Free default chain engine.

dlls/crypt32/crypt32_private.h

@@ -126,6 +126,7 @@ HCRYPTPROV CRYPT_GetDefaultProvider(void);
 void crypt_oid_init(HINSTANCE hinst);
 void crypt_oid_free(void);
 void crypt_sip_free(void);
+void default_chain_engine_free(void);
 
 /* Some typedefs that make it easier to abstract which type of context we're
  * working with.

dlls/crypt32/main.c

@@ -44,6 +44,7 @@ BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD fdwReason, PVOID pvReserved)
         case DLL_PROCESS_DETACH:
             crypt_oid_free();
             crypt_sip_free();
+            default_chain_engine_free();
             if (hDefProv) CryptReleaseContext(hDefProv, 0);
             break;
     }