patch 8.2.0862: ":term ++curwin" makes the current buffer hidden

Problem:    ":term ++curwin" makes the current buffer hidden. (Harm te
            Hennepe)
Solution:   Do not hide the current buffer. (closes #6170)

src/terminal.c

@@ -459,7 +459,7 @@ term_start(
 	    return NULL;
 	}
 	if (do_ecmd(0, NULL, NULL, &split_ea, ECMD_ONE,
-		     ECMD_HIDE
+		      (buf_hide(curwin->w_buffer) ? ECMD_HIDE : 0)
 			  + ((flags & TERM_START_FORCEIT) ? ECMD_FORCEIT : 0),
 							       curwin) == FAIL)
 	{

src/testdir/test_terminal.vim

@@ -450,17 +450,21 @@ func Test_terminal_curwin()
   let cmd = Get_cat_123_cmd()
   call assert_equal(1, winnr('$'))
 
-  split dummy
+  split Xdummy
+  call setline(1, 'dummy')
+  write
+  call assert_equal(1, getbufinfo('Xdummy')[0].loaded)
   exe 'terminal ++curwin ' . cmd
   call assert_equal(2, winnr('$'))
+  call assert_equal(0, getbufinfo('Xdummy')[0].loaded)
   bwipe!
 
-  split dummy
+  split Xdummy
   call term_start(cmd, {'curwin': 1})
   call assert_equal(2, winnr('$'))
   bwipe!
 
-  split dummy
+  split Xdummy
   call setline(1, 'change')
   call assert_fails('terminal ++curwin ' . cmd, 'E37:')
   call assert_equal(2, winnr('$'))
@@ -468,15 +472,16 @@ func Test_terminal_curwin()
   call assert_equal(2, winnr('$'))
   bwipe!
 
-  split dummy
+  split Xdummy
   call setline(1, 'change')
   call assert_fails("call term_start(cmd, {'curwin': 1})", 'E37:')
   call assert_equal(2, winnr('$'))
   bwipe!
 
-  split dummy
+  split Xdummy
   bwipe!
   call delete('Xtext')
+  call delete('Xdummy')
 endfunc
 
 func s:get_sleep_cmd()

src/version.c

@@ -746,6 +746,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    862,
 /**/
     861,
 /**/