fix: remove debug argument in Cmakelists, use const reference to prev…

…ent copy var

CMakeLists.txt

@@ -10,13 +10,8 @@ if(NOT CMAKE_CXX_STANDARD)
   set(CMAKE_CXX_STANDARD 14)
 endif()
 
-# Set the build type to Debug if not specified
-if(NOT CMAKE_BUILD_TYPE)
-  set(CMAKE_BUILD_TYPE Debug)
-endif()
-
 if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
-  add_compile_options(-Wall -Wextra -Wpedantic -fPIC -g3)
+  add_compile_options(-Wall -Wextra -Wpedantic -fPIC)
 endif()
 
 find_package(ament_cmake REQUIRED)

src/shisen_cpp_main.cpp

@@ -51,7 +51,7 @@ int main(int argc, char ** argv)
     int i = 1;
     int pos = 0;
     while (i < args.size()) {
-      std::string arg = args[i++];
+      const std::string& arg = args[i++];
       if (arg[0] == '-') {
         if (arg == "-h" || arg == "--help") {
           std::cout << help_message << std::endl;