win: crashpad_handler should create its own pipe name in ephemeral mode

handler/win/crashy_test_program.cc

Index: handler/win/crashy_test_program.cc
diff --git a/handler/win/crashy_test_program.cc b/handler/win/crashy_test_program.cc
index 921638d92da870b36daa12a4431d22b9df95ec4c..847093a3e400bc076044d5fcb081ebc76f8e059b 100644
--- a/handler/win/crashy_test_program.cc
+++ b/handler/win/crashy_test_program.cc
@@ -112,8 +112,8 @@ int CrashyMain(int argc, wchar_t* argv[]) {
       return EXIT_FAILURE;
     }
   } else {
-    fprintf(stderr, "Usage: %s <server_pipe_name>\n", argv[0]);
-    fprintf(stderr, "       %s <handler_path> <database_path>\n", argv[0]);
+    fprintf(stderr, "Usage: %ls <server_pipe_name>\n", argv[0]);
+    fprintf(stderr, "       %ls <handler_path> <database_path>\n", argv[0]);
     return EXIT_FAILURE;
   }