XCB/XVideo: check version correctly

X11 extensions are upward compatible only if they have the same major
version number. In other words, we wouldn't support XVideo >= 3.0.

modules/video_output/xcb/xvideo.c

@@ -108,22 +108,25 @@ static bool CheckXVideo (vout_display_t *vd, xcb_connection_t *conn)
     xcb_xv_query_extension_cookie_t ck = xcb_xv_query_extension (conn);
     bool ok = false;
 
+    /* We need XVideo 2.2 for PutImage */
     r = xcb_xv_query_extension_reply (conn, ck, NULL);
-    if (r != NULL)
-    {   /* We need XVideo 2.2 for PutImage */
-        if ((r->major > 2) || (r->major == 2 && r->minor >= 2))
-        {
-            msg_Dbg (vd, "using XVideo extension v%"PRIu8".%"PRIu8,
-                     r->major, r->minor);
-            ok = true;
-        }
-        else
-            msg_Dbg (vd, "XVideo extension too old (v%"PRIu8".%"PRIu8,
-                     r->major, r->minor);
-        free (r);
-    }
-    else
+    if (r == NULL)
         msg_Dbg (vd, "XVideo extension not available");
+    else
+    if (r->major != 2)
+        msg_Dbg (vd, "XVideo extension v%"PRIu8".%"PRIu8" unknown",
+                 r->major, r->minor);
+    else
+    if (r->minor < 2)
+        msg_Dbg (vd, "XVideo extension v%"PRIu8".%"PRIu8" too old",
+                 r->major, r->minor);
+    else
+    {
+        msg_Dbg (vd, "using XVideo extension v%"PRIu8".%"PRIu8,
+                 r->major, r->minor);
+        ok = true;
+    }
+    free (r);
     return ok;
 }