patch 8.2.0142: possible to enter popup window with CTRL-W pv8.2.0142

Problem:    Possible to enter popup window with CTRL-W p. (John Devin)
Solution:   Check entered window is not a popup window. (closes #5515)

1 files changed, 14 insertions, 0 deletions

diff --git a/src/testdir/dumps/Test_popupwin_previewpopup_9.dump b/src/testdir/dumps/Test_popupwin_previewpopup_9.dump
new file mode 100644
index 000000000..f555a00dc
--- /dev/null
+++ b/src/testdir/dumps/Test_popupwin_previewpopup_9.dump
@@ -0,0 +1,14 @@
+|o+0&#ffffff0|n|e| @71
+|#|i|n|c|l|u|d|e| |"|X|h|e|a|d|e|r|.|h|"| @54
+|t|h|r|e@1| @69
+|f|o|u|r| @70
+|f|i|v|e| @28|╔+0#0000001#ffd7ff255| |X|h|e|a|d|e|r|.|h| |═@28|X
+|s+0#0000000#ffffff0|i|x| @29|║+0#0000001#ffd7ff255|1+0#e000002&|0| +0#0000001&@36| +0#0000000#a8a8a8255|║+0#0000001#ffd7ff255
+|s+0#0000000#ffffff0|e|v|e|n| @27|║+0#0000001#ffd7ff255|s|e|a|r|c|h|e|d| |w|o|r|d| |i|s| |h|e|r|e| @17| +0#0000000#a8a8a8255|║+0#0000001#ffd7ff255
+|f+0#0000000#ffffff0|i|n|d| |t|h|e|w|o|r|d| |s|o|m|e|w|h|e|r|e| @10|║+0#0000001#ffd7ff255|1+0#e000002&|2| +0#0000001&@36| +0#0000000#0000001|║+0#0000001#ffd7ff255
+|n+0#0000000#ffffff0|i|n|e| @28|║+0#0000001#ffd7ff255|1+0#e000002&|3| +0#0000001&@36| +0#0000000#a8a8a8255|║+0#0000001#ffd7ff255
+|t+0#0000000#ffffff0|h|i|s| |i|s| |a|n|o|t|h|e|r| |w|o|r|d| @12|╚+0#0000001#ffd7ff255|═@39|⇲
+|v+0#0000000#ffffff0|e|r|y| |l|o|n|g| |l|i|n|e| |w|h|e|r|e| |t|h|e| |w|o|r|d| |i|s| |a|l|s|o| >a|n|o|t|h|e|r| @29
+|~+0#4040ff13&| @73
+|~| @73
+|E+0#ffffff16#e000002|3|6@1|:| |N|o|t| |a|l@1|o|w|e|d| |t|o| |e|n|t|e|r| |a| |p|o|p|u|p| |w|i|n|d|o|w| +0#0000000#ffffff0@15|1@1|,|3|9| @8|A|l@1|