[libsoup] SoupMessage: Add missing precondition checks to new getters

[Patrick Griffis <pgriffis src gnome org>]

commit 50fe238ba2a8252337b14a2e2d48d34dae77679b
Author: Patrick Griffis <pgriffis igalia com>
Date:   Sat Dec 5 17:47:13 2020 -0600

    SoupMessage: Add missing precondition checks to new getters

 libsoup/soup-message.c | 10 ++++++++++
 1 file changed, 10 insertions(+)
---
diff --git a/libsoup/soup-message.c b/libsoup/soup-message.c
index 6adcabb1..4ede71c1 100644
--- a/libsoup/soup-message.c
+++ b/libsoup/soup-message.c
@@ -2086,6 +2086,8 @@ soup_message_get_method (SoupMessage *msg)
 {
         SoupMessagePrivate *priv = soup_message_get_instance_private (msg);
 
+       g_return_val_if_fail (SOUP_IS_MESSAGE (msg), NULL);
+
         return priv->method;
 }
 
@@ -2102,6 +2104,8 @@ soup_message_get_status (SoupMessage *msg)
 {
         SoupMessagePrivate *priv = soup_message_get_instance_private (msg);
 
+       g_return_val_if_fail (SOUP_IS_MESSAGE (msg), SOUP_STATUS_NONE);
+
         return priv->status_code;
 }
 
@@ -2118,6 +2122,8 @@ soup_message_get_reason_phrase (SoupMessage *msg)
 {
         SoupMessagePrivate *priv = soup_message_get_instance_private (msg);
 
+       g_return_val_if_fail (SOUP_IS_MESSAGE (msg), NULL);
+
         return priv->reason_phrase; 
 }
 
@@ -2134,6 +2140,8 @@ soup_message_get_request_headers (SoupMessage  *msg)
 {
         SoupMessagePrivate *priv = soup_message_get_instance_private (msg);
 
+       g_return_val_if_fail (SOUP_IS_MESSAGE (msg), NULL);
+
         return priv->request_headers; 
 }
 
@@ -2150,6 +2158,8 @@ soup_message_get_response_headers (SoupMessage  *msg)
 {
         SoupMessagePrivate *priv = soup_message_get_instance_private (msg);
 
+       g_return_val_if_fail (SOUP_IS_MESSAGE (msg), NULL);
+
         return priv->response_headers; 
 }