patch 8.2.2875: cancelling inputlist() after a digit does not return zero

Problem:    Cancelling inputlist() after a digit does not return zero.
Solution:   Always return zero when cancelling. (closes #8231)

Author: mark2185

src/misc1.c

@@ -946,7 +946,12 @@ get_number(
 	    do_redraw = FALSE;
 	    break;
 	}
-	else if (c == CAR || c == NL || c == Ctrl_C || c == ESC || c == 'q')
+	else if (c == Ctrl_C || c == ESC || c == 'q')
+	{
+	    n = 0;
+	    break;
+	}
+	else if (c == CAR || c == NL )
 	    break;
     }
     --no_mapping;

src/testdir/test_functions.vim

@@ -1480,6 +1480,10 @@ func Test_inputlist()
   call feedkeys(":let c = inputlist(['Select color:', '1. red', '2. green', '3. blue'])\<cr>q", 'tx')
   call assert_equal(0, c)
 
+  " Cancel after inputting a number
+  call feedkeys(":let c = inputlist(['Select color:', '1. red', '2. green', '3. blue'])\<cr>5q", 'tx')
+  call assert_equal(0, c)
+
   " Use backspace to delete characters in the prompt
   call feedkeys(":let c = inputlist(['Select color:', '1. red', '2. green', '3. blue'])\<cr>1\<BS>3\<BS>2\<cr>", 'tx')
   call assert_equal(2, c)

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2875,
 /**/
     2874,
 /**/