Fix clang-tidy. (#469)

.clang-tidy

@@ -8,14 +8,16 @@ Checks: "*,
         -llvm*,
         -modernize-use-trailing-return-type,
         -zircon-*,
-        -readability-else-after-return,
-        -readability-static-accessed-through-instance,
-        -readability-avoid-const-params-in-decls,
+        -bugprone-easily-swappable-parameters,
         -cppcoreguidelines-non-private-member-variables-in-classes,
+        -misc-no-recursion,
         -misc-non-private-member-variables-in-classes,
         -modernize-use-nodiscard,
-        -misc-no-recursion,
+        -readability-avoid-const-params-in-decls,
+        -readability-else-after-return,
+        -readability-identifier-length,
         -readability-implicit-bool-conversion,
+        -readability-static-accessed-through-instance,
 "
 WarningsAsErrors: ''
 HeaderFilterRegex: ''