Fixing many instances of broken indentation with spaces instead of tabs.
No code changes.
diff --git a/desc.c b/desc.c
index 2b0cd53..50d4b51 100644
--- a/desc.c
+++ b/desc.c
@@ -658,7 +658,7 @@
 {
 	if (entering(tcp)) {
 		tprintf("%ld, ", tcp->u_arg[0]);
-                printxval(epollctls, tcp->u_arg[1], "EPOLL_CTL_???");
+		printxval(epollctls, tcp->u_arg[1], "EPOLL_CTL_???");
 		tprintf(", %ld, ", tcp->u_arg[2]);
 		if (tcp->u_arg[3] == 0)
 			tprintf("NULL");