Fixed analyzer warnings in ansicolor_sink.cpp

include/spdlog/sinks/ansicolor_sink.h

@@ -77,9 +77,9 @@ private:
     void sink_it_(const details::log_msg &msg) override;
     void flush_() override;
     void set_color_mode_(color_mode mode);
-    void print_ccode_(const string_view_t color_code);
-    void print_range_(const memory_buf_t &formatted, size_t start, size_t end);
-    static std::string to_string_(const string_view_t sv);
+    void print_ccode_(string_view_t color_code) const;
+    void print_range_(const memory_buf_t &formatted, size_t start, size_t end) const;
+    static std::string to_string_(string_view_t sv);
 };
 
 template <typename Mutex>

src/sinks/ansicolor_sink.cpp

@@ -88,12 +88,12 @@ void ansicolor_sink<Mutex>::flush_() {
 }
 
 template <typename Mutex>
-void ansicolor_sink<Mutex>::print_ccode_(const string_view_t color_code) {
+void ansicolor_sink<Mutex>::print_ccode_(const string_view_t color_code) const {
     details::os::fwrite_bytes(color_code.data(), color_code.size(), target_file_);
 }
 
 template <typename Mutex>
-void ansicolor_sink<Mutex>::print_range_(const memory_buf_t &formatted, size_t start, size_t end) {
+void ansicolor_sink<Mutex>::print_range_(const memory_buf_t &formatted, size_t start, size_t end) const {
     details::os::fwrite_bytes(formatted.data() + start, end - start, target_file_);
 }