Fix some typos

src/common.cpp

@@ -12,7 +12,7 @@ spdlog::level level_from_str(const std::string &name) noexcept {
     auto it = std::find(std::begin(level_string_views), std::end(level_string_views), name);
     if (it != std::end(level_string_views)) return static_cast<level>(std::distance(std::begin(level_string_views), it));
 
-    // check also for "warn" and "err" before giving up..
+    // check also for "warn" and "err" before giving up
     if (name == "warn") {
         return spdlog::level::warn;
     }

src/details/os.cpp

@@ -56,7 +56,7 @@
         #include <thread.h>  // for thr_self
     #endif
 
-#endif  // unix
+#endif  // _WIN32
 
 #if defined __APPLE__
     #include <AvailabilityMacros.h>

src/sinks/stdout_sinks.cpp

@@ -40,7 +40,7 @@ stdout_sink_base<Mutex>::stdout_sink_base(FILE *file)
     if (handle_ == INVALID_HANDLE_VALUE && file != stdout && file != stderr) {
         throw_spdlog_ex("spdlog::stdout_sink_base: _get_osfhandle() failed", errno);
     }
-#endif  // WIN32
+#endif  // _WIN32
 }
 
 template <typename Mutex>
@@ -62,7 +62,7 @@ void stdout_sink_base<Mutex>::sink_it_(const details::log_msg &msg) {
     memory_buf_t formatted;
     base_sink<Mutex>::formatter_->format(msg, formatted);
     ::fwrite(formatted.data(), sizeof(char), formatted.size(), file_);
-#endif                // WIN32
+#endif                // _WIN32
     ::fflush(file_);  // flush every line to terminal
 }