PVS-Studio warning V665 for Source SDK

#pragma warning (disable : 4355 )
....
#pragma warning ( default : 4355 )

This suspicious code was found in Source SDK project by PVS-Studio static code analyzer.
Warning message is:
V665 Possibly, the usage of '#pragma warning(default: X)' is incorrect in this context. The '#pragma warning(push/pop)' should be used instead. Check lines: 577, 624. Captioncompiler convar.h 624

PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/