manual: Use @code{errno} instead of @var{errno} [BZ #24063]

@var is intended for placeholders (such as function parameters).
Actual variables need to use @code because @var causes upper-case
output, resulting in a different C identifier.

1 files changed, 1 insertions, 1 deletions

diff --git a/manual/time.texi b/manual/time.texi
index 4d154452eb..9e98131487 100644
--- a/manual/time.texi
+++ b/manual/time.texi
@@ -2864,7 +2864,7 @@ without getting interrupted by a signal, this is zero.
 @code{struct timespec} is described in @xref{Elapsed Time}.
 
 If the function returns because the interval is over the return value is
-zero.  If the function returns @math{-1} the global variable @var{errno}
+zero.  If the function returns @math{-1} the global variable @code{errno}
 is set to the following values:
 
 @table @code