patch 8.2.1061: insufficient testing for src/window.c

Problem:    Insufficient testing for src/window.c.
Solution:   Add more tests. (Yegappan Lakshmanan, closes #6345)
diff --git a/src/window.c b/src/window.c
index e2adc0c..4b2ff4b 100644
--- a/src/window.c
+++ b/src/window.c
@@ -1810,8 +1810,8 @@
 	    return;
 	}
 
-	// may need move the status line/vertical separator of the last window
-	//
+	// may need to move the status line/vertical separator of the last
+	// window
 	if (win1 == lastwin)
 	{
 	    height = win1->w_prev->w_status_height;