Fix lint error with strtol in test

test/cctest/test-debug.cc

Index: test/cctest/test-debug.cc
diff --git a/test/cctest/test-debug.cc b/test/cctest/test-debug.cc
index 36b27e7f997c8a0fcaa391b7f81daa90d2cc7b0f..c79ab6a5eb0bdb0ccc28fd4ee841bdbcff687793 100644
--- a/test/cctest/test-debug.cc
+++ b/test/cctest/test-debug.cc
@@ -3881,11 +3881,11 @@ int GetTotalFramesInt(char *message) {
   }
   pos += strlen(prefix);
   char* pos_end = pos;
-  long res = strtol(pos, &pos_end, 10);
+  int res = static_cast<int>(strtol(pos, &pos_end, 10));
   if (pos_end == pos) {
     return -1;
   }
-  return static_cast<int>(res);
+  return res;
 }