[pepper-str] Fix "unused parameter" warning in CI (#7075)

This fix "unused parameter" warning in CI.

Signed-off-by: Hyun Sik Yoon <hyunsik.yoon@samsung.com>

diff --git a/compiler/pepper-str/include/pepper/str.h b/compiler/pepper-str/include/pepper/str.h
index 0ddacb5..efbc3a9 100644 (file)
--- a/compiler/pepper-str/include/pepper/str.h
+++ b/compiler/pepper-str/include/pepper/str.h
@@ -29,7 +29,7 @@ namespace details
 
 template <typename... Arg> void str_impl(std::ostream &os, Arg &&... args);
 
-template <> inline void str_impl(std::ostream &os)
+template <> inline void str_impl(std::ostream &)
 {
   // DO NOTHING
   return;