Explicitly ignore return value from remove. We wouldn't do anything

differently if we can't unlink the temporary file. Also, free the
temporary file name when we set it to NULL.

CID: 1006909, 719448

usr.sbin/btxld/btxld.c

@@ -189,7 +189,7 @@ static void
 cleanup(void)
 {
     if (tname)
-	remove(tname);
+	(void)remove(tname);
 }
 
 /*
@@ -287,6 +287,7 @@ btxld(const char *iname)
 	err(2, "%s", tname);
     if (rename(tname, oname))
 	err(2, "%s: Can't rename to %s", tname, oname);
+    free((void*)(intptr_t)tname);
     tname = NULL;
     if (verbose) {
 	printf(binfo, btx.btx_majver, btx.btx_minver, btx.btx_textsz,