Merge pull request #377 from libtom/pr/clang-tidy-void-return

clang-tidy: readability-redundant-control-flow
(cherry picked from commit 4cc8d08)

Author: karel-m

src/math/multi.c

@@ -67,7 +67,6 @@ void ltc_cleanup_multi(void **a, ...)
       cur = va_arg(args, void**);
    }
    va_end(args);
-   return;
 }
 
 #endif