bug #20910 (NOT NULL column reported as NULL in SHOW FIELDS)

two test results changed after the patch


mysql-test/r/grant.result:
  result fixed
mysql-test/r/type_ranges.result:
  result fixed

mysql-test/r/grant.result

@@ -525,7 +525,7 @@ Db	char(64)	NO	PRI
 User	char(16)	NO	PRI		
 Table_name	char(64)	NO	PRI		
 Grantor	char(77)	NO	MUL		
-Timestamp	timestamp	YES		CURRENT_TIMESTAMP	
+Timestamp	timestamp	NO		CURRENT_TIMESTAMP	
 Table_priv	set('Select','Insert','Update','Delete','Create','Drop','Grant','References','Index','Alter','Create View','Show view')	NO			
 Column_priv	set('Select','Insert','Update','References')	NO			
 use test;

mysql-test/r/type_ranges.result

@@ -57,7 +57,7 @@ ushort	smallint(5) unsigned zerofill	NULL	NO	MUL	00000		#
 umedium	mediumint(8) unsigned	NULL	NO	MUL	0		#	
 ulong	int(11) unsigned	NULL	NO	MUL	0		#	
 ulonglong	bigint(13) unsigned	NULL	NO	MUL	0		#	
-time_stamp	timestamp	NULL	YES		CURRENT_TIMESTAMP		#	
+time_stamp	timestamp	NULL	NO		CURRENT_TIMESTAMP		#	
 date_field	date	NULL	YES		NULL		#	
 time_field	time	NULL	YES		NULL		#	
 date_time	datetime	NULL	YES		NULL		#	
@@ -229,7 +229,7 @@ ushort	smallint(5) unsigned zerofill	NULL	NO		00000		#
 umedium	mediumint(8) unsigned	NULL	NO	MUL	0		#	
 ulong	int(11) unsigned	NULL	NO	MUL	0		#	
 ulonglong	bigint(13) unsigned	NULL	NO	MUL	0		#	
-time_stamp	timestamp	NULL	YES		CURRENT_TIMESTAMP		#	
+time_stamp	timestamp	NULL	NO		CURRENT_TIMESTAMP		#	
 date_field	char(10)	latin1_swedish_ci	YES		NULL		#	
 time_field	time	NULL	YES		NULL		#	
 date_time	datetime	NULL	YES		NULL		#	
@@ -255,7 +255,7 @@ ushort	smallint(5) unsigned zerofill	NULL	NO		00000		#
 umedium	mediumint(8) unsigned	NULL	NO		0		#	
 ulong	int(11) unsigned	NULL	NO		0		#	
 ulonglong	bigint(13) unsigned	NULL	NO		0		#	
-time_stamp	timestamp	NULL	YES		0000-00-00 00:00:00		#	
+time_stamp	timestamp	NULL	NO		0000-00-00 00:00:00		#	
 date_field	char(10)	latin1_swedish_ci	YES		NULL		#	
 time_field	time	NULL	YES		NULL		#	
 date_time	datetime	NULL	YES		NULL		#