[PATCH] date: fix incorrect year in dates of the form [[[MM]DD]hh]mm

[Ron Yorston]

Since commit 688a7e3f dates of the form [[[MM]DD]hh]mm have the
wrong year:

   $ ./busybox date -d 10101010
   Fri Oct 10 10:10:00 GMT 10102910

Signed-off-by: Ron Yorston <rmy at tigress.co.uk>
---
 libbb/time.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/libbb/time.c b/libbb/time.c
index ea2f72e..5aa5aeb 100644
--- a/libbb/time.c
+++ b/libbb/time.c
@@ -12,6 +12,7 @@ void FAST_FUNC parse_datestr(const char *date_str, struct tm *ptm)
 {
 	char end = '\0';
 	const char *last_colon = strrchr(date_str, ':');
+	unsigned year;
 
 	if (last_colon != NULL) {
 		/* Parse input and assign appropriately to ptm */
@@ -69,16 +70,16 @@ void FAST_FUNC parse_datestr(const char *date_str, struct tm *ptm)
 		}
 	} else
 	/* yyyy-mm-dd HH */
-	if (sscanf(date_str, "%u-%u-%u %u%c", &ptm->tm_year,
+	if (sscanf(date_str, "%u-%u-%u %u%c", &year,
 				&ptm->tm_mon, &ptm->tm_mday,
 				&ptm->tm_hour,
 				&end) >= 4
 	/* yyyy-mm-dd */
-	 || sscanf(date_str, "%u-%u-%u%c", &ptm->tm_year,
+	 || sscanf(date_str, "%u-%u-%u%c", &year,
 				&ptm->tm_mon, &ptm->tm_mday,
 				&end) >= 3
 	) {
-		ptm->tm_year -= 1900; /* Adjust years */
+		ptm->tm_year = year - 1900; /* Adjust years */
 		ptm->tm_mon -= 1; /* Adjust month from 1-12 to 0-11 */
 	} else
 	if (date_str[0] == '@') {
-- 
1.8.4.2