updated warning string to match patch in bug report 2868
diff --git a/src/mesa/drivers/x11/xm_api.c b/src/mesa/drivers/x11/xm_api.c
index 55fc867..873d196 100644
--- a/src/mesa/drivers/x11/xm_api.c
+++ b/src/mesa/drivers/x11/xm_api.c
@@ -1740,14 +1740,16 @@
 
 #ifdef XFree86Server
    if (GET_VISUAL_DEPTH(v) != ((XMesaDrawable)w)->depth) {
-      _mesa_warning(NULL, "XMesaCreateWindowBuffer: depth mismatch between visual and window! (%d != %d)\n", GET_VISUAL_DEPTH(v) , ((XMesaDrawable)w)->depth );
+      _mesa_warning(NULL, "XMesaCreateWindowBuffer: depth mismatch between visual (%d) and window (%d)!\n",
+                    GET_VISUAL_DEPTH(v), ((XMesaDrawable) w)->depth);
       return NULL;
    }
 #else
    XGetWindowAttributes( v->display, w, &attr );
 
    if (GET_VISUAL_DEPTH(v) != attr.depth) {
-      _mesa_warning(NULL, "XMesaCreateWindowBuffer: depth mismatch between visual and window! (%d != %d)\n", GET_VISUAL_DEPTH(v) , attr.depth );
+      _mesa_warning(NULL, "XMesaCreateWindowBuffer: depth mismatch between visual (%d) and window (%d)!\n",
+                    GET_VISUAL_DEPTH(v), attr.depth);
       return NULL;
    }
 #endif