Fixed warning

src/details/err_helper.cpp

@@ -14,7 +14,7 @@ err_helper::err_helper(const err_helper &other)
 
 err_helper::err_helper(err_helper &&other)
     : custom_err_handler_(std::move(other.custom_err_handler_)),
-      last_report_time_(other.last_report_time_) {};
+      last_report_time_(other.last_report_time_) {}
 
 // Prints error to stderr with source location (if available). A stderr sink is not used because reaching
 // this point might indicate a problem with the logging system itself so we use fputs() directly.