silence some compiler warnings

Actually, most of this commit is adding (void) to various function returns
where we know its ok to ignore the return value. This doesn't actually
silence the -Wunused-result warning (thanks a bundle gcc), but at least
it marks our intentions.

1 files changed, 1 insertions, 1 deletions

diff --git a/doio.c b/doio.c
index 50ab24f2a1..39cbf6d851 100644
--- a/doio.c
+++ b/doio.c
@@ -1395,7 +1395,7 @@ S_exec_failed(pTHX_ const char *cmd, int fd, int do_report)
 	Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
 		    cmd, Strerror(e));
     if (do_report) {
-	PerlLIO_write(fd, (void*)&e, sizeof(int));
+	(void)PerlLIO_write(fd, (void*)&e, sizeof(int));
 	PerlLIO_close(fd);
     }
 }