[PATCH 12/25] lib/readline/doc/history.3: Silence groff warning.

[G. Branden Robinson]

...without interfering with the test for DWB man(7) we do subsequently.

Fixes:
$ nroff -ww -z -man ./lib/readline/doc/history.3
troff:./lib/readline/doc/history.3:29: warning: register ')Y' not defined
---
 lib/readline/doc/history.3 | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/readline/doc/history.3 b/lib/readline/doc/history.3
index 4a63861e..09d5ee21 100644
--- a/lib/readline/doc/history.3
+++ b/lib/readline/doc/history.3
@@ -26,6 +26,7 @@
 .
 .\" Fix broken EX/EE macros on DWB troff.
 .\" Detect it: only DWB sets up a `)Y` register.
+.if \n(.g .nr )Y 0 \" silence "groff -wreg" warning
 .if \n()Y \{\
 .\" Revert the undesired changes to indentation.
 .am EX
-- 
2.30.2

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