don't create gigantic images when XGetGeometry fails in FbTk::FbPixmap::copy

ChangeLog

@@ -1,5 +1,8 @@
  (Format: Year/Month/Day)
 Changes for 1.0.0:
+*07/07/03:
+   * Fixed resource usage due to Skype 1.4, bug #1745678 (Mark)
+     FbTk/FbPixmap.cc
 *07/07/02:
    * Remember original size/position in apps file for shaded or maximized
      windows (Mark)

src/FbTk/FbPixmap.cc

@@ -166,13 +166,14 @@ void FbPixmap::copy(Pixmap pm, unsigned int depth, int screen_num) {
     unsigned int border_width, bpp;
     unsigned int new_width, new_height;
 
-    XGetGeometry(display(),
-                 pm,
-                 &root,
-                 &x, &y,
-                 &new_width, &new_height,
-                 &border_width,
-                 &bpp);
+    if (!XGetGeometry(display(),
+                      pm,
+                      &root,
+                      &x, &y,
+                      &new_width, &new_height,
+                      &border_width,
+                      &bpp))
+        return;
 
     if (depth == 0)
         depth = bpp;