fixup: for auto iterator

Author: domob1812

divi/src/test/coins_tests.cpp

@@ -128,7 +128,7 @@ BOOST_AUTO_TEST_CASE(coins_cache_simulation_test)
 
         // Once every 1000 iterations and at the end, verify the full cache.
         if (insecure_rand() % 1000 == 1 || i == NUM_SIMULATION_ITERATIONS - 1) {
-            for (std::map<uint256, CCoins>::iterator it = result.begin(); it != result.end(); it++) {
+            for (auto it = result.begin(); it != result.end(); it++) {
                 const CCoins* coins = stack.back()->AccessCoins(it->first);
                 if (coins) {
                     BOOST_CHECK(*coins == it->second);