git: ee0299e5f300 - main - units: Remove set but unused variable.

The branch main has been updated by jhb:

URL: https://cgit.FreeBSD.org/src/commit/?id=ee0299e5f300cbc2ab48c1fe44db0325b40d19a3

commit ee0299e5f300cbc2ab48c1fe44db0325b40d19a3
Author:     John Baldwin <jhb@FreeBSD.org>
AuthorDate: 2023-06-20 16:28:59 +0000
Commit:     John Baldwin <jhb@FreeBSD.org>
CommitDate: 2023-06-20 16:28:59 +0000

    units: Remove set but unused variable.
    
    Reported by:    GCC
---
 usr.bin/units/units.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/usr.bin/units/units.c b/usr.bin/units/units.c
index b222ade449df..88363e2e6c34 100644
--- a/usr.bin/units/units.c
+++ b/usr.bin/units/units.c
@@ -763,11 +763,9 @@ main(int argc, char **argv)
 	EditLine *el;
 	HistEvent ev;
 	int inputsz;
-	char const * history_file;
 
 	quiet = false;
 	readfile = false;
-	history_file = NULL;
 	outputformat = numfmt;
 	quit = false;
 	while ((optchar = getopt_long(argc, argv, "+ehf:o:qtvH:UV", longopts, NULL)) != -1) {
@@ -783,7 +781,7 @@ main(int argc, char **argv)
 				readunits(optarg);
 			break;
 		case 'H':
-			history_file = optarg;
+			/* Ignored, for compatibility with GNU units. */
 			break;
 		case 'q':
 			quiet = true;