Dropped dependency on libgcrypt with new GnuTLS (>2.12.20) versions

src/testcurl/https/test_https_get_parallel_threads.c

@@ -33,7 +33,9 @@
 #include <limits.h>
 #include <curl/curl.h>
 #include <pthread.h>
+#ifdef MHD_HTTPS_REQUIRE_GRYPT
 #include <gcrypt.h>
+#endif /* MHD_HTTPS_REQUIRE_GRYPT */
 #include "tls_test_common.h"
 
 #if defined(CPU_COUNT) && (CPU_COUNT+0) < 4
@@ -140,9 +142,11 @@ main (int argc, char *const *argv)
   /* initialize random seed used by curl clients */
   unsigned int iseed = (unsigned int) time (NULL);
 
+#ifdef MHD_HTTPS_REQUIRE_GRYPT
 #ifdef GCRYCTL_INITIALIZATION_FINISHED
   gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
 #endif
+#endif /* MHD_HTTPS_REQUIRE_GRYPT */
   srand (iseed);
   if (0 != curl_global_init (CURL_GLOBAL_ALL))
     {