Fixed memory leak in curve25519 test case.

ChangeLog

 2014-08-02  Niels Möller  <nisse@lysator.liu.se>
 
+	* testsuite/curve25519-dh-test.c (curve25519_sqrt): Fixed memory
+	leak, a mpz_clear call was missing.
+
 	* ecc-internal.h (ECC_MUL_A_EH_WBITS): Set to 4, to enable
 	window-based scalar multiplication.
 

testsuite/curve25519-dh-test.c

@@ -111,6 +111,7 @@ int curve25519_sqrt (const struct ecc_curve *ecc,
   mpz_clear (sm1h);
   mpz_clear (x);
   mpz_clear (b);
+  mpz_clear (t);
   return success;
 }