Add test case that requires the fix

src/test/equihash_tests.cpp

@@ -119,6 +119,14 @@ BOOST_AUTO_TEST_CASE(solver_testvectors) {
   {637, 78032, 97478, 118268, 16058, 44395, 19029, 39150, 1566, 66582, 4084, 107252, 59619, 116281, 67957, 128728, 30916, 69051, 90422, 102716, 51905, 66753, 60509, 78066, 38568, 119630, 75839, 113134, 54356, 70996, 63085, 83048},
   {4130, 71826, 46248, 50447, 4281, 129092, 23122, 103196, 9305, 34797, 111094, 127775, 82662, 120386, 109738, 124765, 24770, 125174, 83477, 102473, 45209, 79062, 84764, 125929, 31689, 95554, 66614, 127658, 31756, 55684, 53670, 53776}
                 });
+
+    TestEquihashSolvers(96, 5, "Test case with 3+-way collision in the final round.", 0x2af3, {
+  {1093, 45982, 37399, 89200, 29813, 113936, 40951, 64027, 4370, 122807, 82736, 119086, 21530, 60168, 65163, 68120, 2310, 94346, 22675, 61162, 19193, 54507, 38352, 94322, 5341, 65047, 48071, 120787, 32561, 129305, 62593, 93497},
+  {6411, 91796, 58827, 93129, 6705, 74430, 91891, 124391, 32765, 128544, 51395, 74269, 55980, 89012, 58573, 75543, 7902, 22572, 27944, 66370, 61755, 76417, 68687, 90417, 31576, 105479, 117582, 130960, 52751, 53260, 71636, 118134},
+  {6411, 91796, 58827, 93129, 6705, 74430, 91891, 124391, 32765, 128544, 51395, 74269, 55980, 89012, 58573, 75543, 7902, 22572, 61755, 76417, 27944, 66370, 68687, 90417, 31576, 105479, 117582, 130960, 52751, 53260, 71636, 118134},
+  {6411, 91796, 58827, 93129, 6705, 74430, 91891, 124391, 32765, 128544, 51395, 74269, 55980, 89012, 58573, 75543, 7902, 22572, 68687, 90417, 27944, 66370, 61755, 76417, 31576, 105479, 117582, 130960, 52751, 53260, 71636, 118134},
+  {11541, 106147, 29075, 118360, 53060, 62499, 109856, 118745, 14581, 56663, 114595, 121986, 35542, 72577, 88428, 116033, 11996, 55170, 16966, 94150, 16116, 81559, 34889, 112430, 37304, 104803, 92442, 119354, 46613, 72741, 50259, 89047}
+                });
 }
 
 BOOST_AUTO_TEST_CASE(validator_testvectors) {