lib/.gitignore: update to match recent gnulib

rrthomas · rrthomas · commit 0ef4ff3363af · 2022-01-21T19:50:46.000Z
diff --git a/lib/.gitignore b/lib/.gitignore
@@ -234,3 +234,5 @@
 /stdalign.in.h
 /sys_random.in.h
 /windows-initguard.h
+/stdio-read.c
+/stdio-write.c
