Fix Tencent#899

Author: miloyip

include/rapidjson/document.h

@@ -2564,7 +2564,7 @@ class GenericObject {
     GenericObject AddMember(StringRefType name, ValueType& value, AllocatorType& allocator) const { value_.AddMember(name, value, allocator); return *this; }
     GenericObject AddMember(StringRefType name, StringRefType value, AllocatorType& allocator) const { value_.AddMember(name, value, allocator); return *this; }
     template <typename T> RAPIDJSON_DISABLEIF_RETURN((internal::OrExpr<internal::IsPointer<T>, internal::IsGenericValue<T> >), (GenericObject)) AddMember(StringRefType name, T value, AllocatorType& allocator) const { value_.AddMember(name, value, allocator); return *this; }
-    void RemoveAllMembers() { return value_.RemoveAllMembers(); }
+    void RemoveAllMembers() { value_.RemoveAllMembers(); }
     bool RemoveMember(const Ch* name) const { return value_.RemoveMember(name); }
 #if RAPIDJSON_HAS_STDSTRING
     bool RemoveMember(const std::basic_string<Ch>& name) const { return value_.RemoveMember(name); }