Fixed #27172 -- Closed database cursor explicitly in two doc examples

docs/topics/db/managers.txt

@@ -67,18 +67,18 @@ returns a list of all ``OpinionPoll`` objects, each with an extra
     class PollManager(models.Manager):
         def with_counts(self):
             from django.db import connection
-            cursor = connection.cursor()
-            cursor.execute("""
-                SELECT p.id, p.question, p.poll_date, COUNT(*)
-                FROM polls_opinionpoll p, polls_response r
-                WHERE p.id = r.poll_id
-                GROUP BY p.id, p.question, p.poll_date
-                ORDER BY p.poll_date DESC""")
-            result_list = []
-            for row in cursor.fetchall():
-                p = self.model(id=row[0], question=row[1], poll_date=row[2])
-                p.num_responses = row[3]
-                result_list.append(p)
+            with connection.cursor() as cursor:
+                cursor.execute("""
+                    SELECT p.id, p.question, p.poll_date, COUNT(*)
+                    FROM polls_opinionpoll p, polls_response r
+                    WHERE p.id = r.poll_id
+                    GROUP BY p.id, p.question, p.poll_date
+                    ORDER BY p.poll_date DESC""")
+                result_list = []
+                for row in cursor.fetchall():
+                    p = self.model(id=row[0], question=row[1], poll_date=row[2])
+                    p.num_responses = row[3]
+                    result_list.append(p)
             return result_list
 
     class OpinionPoll(models.Model):

docs/topics/db/sql.txt

@@ -250,12 +250,10 @@ For example::
     from django.db import connection
 
     def my_custom_sql(self):
-        cursor = connection.cursor()
-
-        cursor.execute("UPDATE bar SET foo = 1 WHERE baz = %s", [self.baz])
-
-        cursor.execute("SELECT foo FROM bar WHERE baz = %s", [self.baz])
-        row = cursor.fetchone()
+        with connection.cursor() as cursor:
+            cursor.execute("UPDATE bar SET foo = 1 WHERE baz = %s", [self.baz])
+            cursor.execute("SELECT foo FROM bar WHERE baz = %s", [self.baz])
+            row = cursor.fetchone()
 
         return row