Don't call BN_rand with zero bits in bntest.c

CHANGES

@@ -4,6 +4,9 @@
 
  Changes between 0.9.4 and 0.9.5  [xx XXX 2000]
 
+  *) In bntest.c don't call BN_rand with zero bits argument.
+     [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
+
   *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
      case was implemented. This caused BN_div_recp() to fail occasionally.
      [Ulf Möller]

crypto/bn/bntest.c

@@ -506,7 +506,7 @@ int test_mul(BIO *bp)
 
 	for (i=0; i<num0+num1; i++)
 		{
-		if (i < num1)
+		if (i <= num1)
 			{
 			BN_rand(&a,100,0,0);
 			BN_rand(&b,100,0,0);