awesome: prefere 16px icons - patch

--- ewmh.c_a    2014-01-20 17:39:11.238913114 +0400
+++ ewmh.c  2014-01-20 22:49:51.560952817 +0400
@@ -620,6 +620,8 @@
 ewmh_window_icon_from_reply(xcb_get_property_reply_t *r)
 {
     uint32_t *data;
+    uint64_t move;
+    uint32_t *selected_data;
     uint64_t len;

     if(!r || r->type != XCB_ATOM_CARDINAL || r->format != 32 || r->length < 2)
@@ -633,11 +635,26 @@
      * overflow. <uint32_t> times <another uint32_t casted to uint64_t> always
      * fits into an uint64_t and thus this multiplication cannot overflow.
      */
-    len = data[0] * (uint64_t) data[1];
-    if (!data[0] || !data[1] || len > r->length - 2)
-        return 0;
+    selected_data = 0;
+    move = 0;
+
+    do {
+        len = data[0] * (uint64_t) data[1];
+        if (!data[0] || !data[1] || len+move+2 > r->length) {
+            if(!selected_data) return 0;
+            else break;
+        }
+        if (data[0] == 16) {
+            selected_data = data;
+            break;
+        }
+        if (!selected_data)
+            selected_data = data;
+        move += len + 2;
+        data += move;
+    } while(move+2 < r->length);

-    return draw_surface_from_data(data[0], data[1], data + 2);
+    return draw_surface_from_data(selected_data[0], selected_data[1], selected_data + 2);
 }

 /** Get NET_WM_ICON.