Result of StressDur macro isn't used

[aganm]

On this line

soloud/src/audiosource/speech/klatt.cpp

Line 762 in 1157475

int stressdur = StressDur(p,stress);

Uses this macro

soloud/src/audiosource/speech/klatt.cpp

Line 100 in 3346bbc

#define StressDur(e,s) (s,((e->mDU + e->mUD)/2))

See the issue? The use of the macro only assigns stress to stressdur without doing anything with it. Is this intended? If so why not just assign stress to stressdur directly since the math of the macro is left unused.