add missing header "ios"

liangdzou · web-flow · commit 13687a6e3ecd · 2019-04-09T10:55:57.000+08:00
add missing header "ios" for symbol "std:: streamsize"
diff --git a/include/rapidjson/istreamwrapper.h b/include/rapidjson/istreamwrapper.h
@@ -17,6 +17,7 @@
 
 #include "stream.h"
 #include <iosfwd>
+#include <ios>
 
 #ifdef __clang__
 RAPIDJSON_DIAG_PUSH
