PVS-Studio warning V591 for Quake3

static ID_INLINE int BigLong(int l)
{ LongSwap(l); }

Need: { return LongSwap(l); }

This suspicious code was found in Quake3 project by PVS-Studio static code analyzer.
Warning message is:
V591 Non-void function should return a value. botlib q_shared.h 155

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/