libbb: get_uidgid() always called with allow_numeric=1

function                                             old     new   delta
xget_uidgid                                           30      25      -5
make_device                                         2188    2183      -5
main                                                 797     792      -5
get_uidgid                                           240     225     -15

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/libbb/appletlib.c b/libbb/appletlib.c
index 24253cf..0f83eda 100644
--- a/libbb/appletlib.c
+++ b/libbb/appletlib.c
@@ -437,7 +437,7 @@
 						goto pe_label;
 					}
 					*e = ':'; /* get_uidgid needs USER:GROUP syntax */
-					if (get_uidgid(&sct->m_ugid, s, /*allow_numeric:*/ 1) == 0) {
+					if (get_uidgid(&sct->m_ugid, s) == 0) {
 						errmsg = "unknown user/group";
 						goto pe_label;
 					}