CHERRY-PICK: Fix "Extend host glibc workaround to clone3"

The workaround was applied inside a conditional for __NR_rseq which
meant it would not take effect if used against a glibc with rseq but
not clone3, such as the one in Debian 10.

Test: local
Bug: 246990922
Change-Id: I52e5be3d489c08e527211ab48848e73aabbbca2a
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/minijail/+/3989233
Auto-Submit: Alistair Delva <[email protected]>
Tested-by: Alistair Delva <[email protected]>
Commit-Queue: Alistair Delva <[email protected]>
Reviewed-by: Allen Webb <[email protected]>
Reviewed-by: Frederick Mayle <[email protected]>
diff --git a/gen_syscalls-inl.h b/gen_syscalls-inl.h
index aee71e2..f885081 100644
--- a/gen_syscalls-inl.h
+++ b/gen_syscalls-inl.h
@@ -86,13 +86,12 @@
 #elif __arm64__
 #define __NR_rseq 293
 #endif
+#endif /* __NR_rseq */
 
 #ifndef __NR_clone3
 #define __NR_clone3 435
 #endif
 
-#endif /* __NR_rseq */
-
 #ifndef __NR_membarrier
 #ifdef __x86_64__
 #define __NR_membarrier 324