strptime: %s format fix.

Almost never needed in real life because %s is tends to be
only one format spec.
1) Return code of gmtime_r() is checked.
2) All flags are set.

Submitted by:	ache
MFC after:	3 weeks

1 files changed, 4 insertions, 1 deletions

diff --git a/lib/libc/stdtime/strptime.c b/lib/libc/stdtime/strptime.c
index 1d8dad9..8576bdb 100644
--- a/lib/libc/stdtime/strptime.c
+++ b/lib/libc/stdtime/strptime.c
@@ -503,8 +503,11 @@ label:
 			}
 			errno = sverrno;
 			buf = cp;
-			gmtime_r(&t, tm);
+			if (gmtime_r(&t, tm) == NULL)
+				return (NULL);
 			*GMTp = 1;
+			flags |= FLAG_YDAY | FLAG_WDAY | FLAG_MONTH |
+			    FLAG_MDAY | FLAG_YEAR;
 			}
 			break;