patch 9.0.1533: test for 'smoothscroll' is ineffective

Problem:    Test for 'smoothscroll' is ineffective.
Solution:   Change the order of testing "zb" and "zt". (Luuk van Baal,
            closes #12366)

src/testdir/dumps/Test_smooth_long_11.dump

@@ -1,6 +1,6 @@
-|<+0#4040ff13#ffffff0@2|t+0#0000000&|h| |l|o|t|s| |o|f| |t|e|x|t| |w|i|t|h| |l|o|t|s| |o|f| |t|e|x|t| |w|i|t
+>f+0&#ffffff0|o|u|r| @35
-|h| |l|o|t|s| |o|f| |t|e|x|t| |w|i|t|h| |l|o|t|s| |o|f| |t|e|x|t| |w|i|t|h| |l|o
+|~+0#4040ff13&| @38
-|t|s| |o|f| |t|e|x|t| |w|i|t|h| |l|o|t|s| |o|f| |t|e|x|t| |w|i|t|h| |l|o|t|s| |o
+|~| @38
-|f| |t|e|x|t| |w|i|t|h| |l|o|t|s| |o|f| |t|e|x|t| |e|n|d| @11
+|~| @38
->f|o|u|r| @35
+|~| @38
-|:|s|e|t| |s|c|r|o|l@1|o| @9|4|,|1| @10|B|o|t| 
+| +0#0000000&@21|4|,|1| @10|B|o|t| 

src/testdir/dumps/Test_smooth_long_12.dump

@@ -3,4 +3,4 @@
 >f|o|u|r| @35
 |~+0#4040ff13&| @38
 |~| @38
-|:+0#0000000&|s|e|t| |s|c|r|o|l@1|o| @9|4|,|1| @10|B|o|t| 
+| +0#0000000&@21|4|,|1| @10|B|o|t| 

src/testdir/dumps/Test_smooth_long_13.dump

@@ -1,6 +1,6 @@
->f+0&#ffffff0|o|u|r| @35
+|<+0#4040ff13#ffffff0@2|t+0#0000000&|h| |l|o|t|s| |o|f| |t|e|x|t| |w|i|t|h| |l|o|t|s| |o|f| |t|e|x|t| |w|i|t
-|~+0#4040ff13&| @38
+|h| |l|o|t|s| |o|f| |t|e|x|t| |w|i|t|h| |l|o|t|s| |o|f| |t|e|x|t| |w|i|t|h| |l|o
-|~| @38
+|t|s| |o|f| |t|e|x|t| |w|i|t|h| |l|o|t|s| |o|f| |t|e|x|t| |w|i|t|h| |l|o|t|s| |o
-|~| @38
+|f| |t|e|x|t| |w|i|t|h| |l|o|t|s| |o|f| |t|e|x|t| |e|n|d| @11
-|~| @38
+>f|o|u|r| @35
-| +0#0000000&@21|4|,|1| @10|B|o|t| 
+@22|4|,|1| @10|B|o|t| 

src/testdir/test_scroll_opt.vim

@@ -323,11 +323,11 @@ func Test_smoothscroll_wrap_long_line()
   call VerifyScreenDump(buf, 'Test_smooth_long_10', {})
 
   " Test zt/zz/zb that they work properly when a long line is above it
-  call term_sendkeys(buf, "zb")
+  call term_sendkeys(buf, "zt")
   call VerifyScreenDump(buf, 'Test_smooth_long_11', {})
   call term_sendkeys(buf, "zz")
   call VerifyScreenDump(buf, 'Test_smooth_long_12', {})
-  call term_sendkeys(buf, "zt")
+  call term_sendkeys(buf, "zb")
   call VerifyScreenDump(buf, 'Test_smooth_long_13', {})
 
   " Repeat the step and move the cursor down again.

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1533,
 /**/
     1532,
 /**/