patch 8.2.3272: cannot use id zero with prop_find()

Problem:    Cannot use id zero with prop_find(). (Naohiro Ono)
Solution:   Also accept id zero.

src/testdir/test_textprop.vim

@@ -239,12 +239,18 @@ func Test_prop_find()
   let result = prop_find({'type': 'prop_name', 'lnum': 1}, 'f')
   call assert_equal(expected[0], result)
 
-  " When ID is -1 it's like prop is not found.
+  " Negative ID is possible, just like prop is not found.
   call assert_equal({}, prop_find({'id': -1}))
+  call assert_equal({}, prop_find({'id': -2}))
+
+  call prop_clear(1, 6)
+
+  " Default ID is zero
+  call prop_add(5, 4, {'type': 'prop_name', 'length': 1})
+  call assert_equal(#{lnum: 5, id: 0, col: 4, type_bufnr: 0, end: 1, type: 'prop_name', length: 1, start: 1}, prop_find({'id': 0}))
 
-  call prop_clear(1,6)
   call prop_type_delete('prop_name')
-
+  call prop_clear(1, 6)
   bwipe!
 endfunc
 

src/textprop.c

@@ -689,7 +689,7 @@ f_prop_find(typval_T *argvars, typval_T *rettv)
     if (dict_find(dict, (char_u *)"id", -1) != NULL)
     {
 	id = dict_get_number(dict, (char_u *)"id");
-	id_found = id != 0;
+	id_found = TRUE;
     }
     if (dict_find(dict, (char_u *)"type", -1))
     {

src/version.c

@@ -755,6 +755,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3272,
 /**/
     3271,
 /**/