Remove extra whitespace

Author: vitaut

include/fmt/std.h

@@ -514,7 +514,7 @@ template <> struct formatter<std::error_code> {
 
  public:
   FMT_CONSTEXPR void set_debug_format(bool set = true) { debug_ = set; }
-  
+
   FMT_CONSTEXPR auto parse(parse_context<>& ctx) -> const char* {
     auto it = ctx.begin(), end = ctx.end();
     if (it == end) return it;