two small fixes for xcompmgr

Hi,

This fixes two small glitches in app/xcompmgr:

uninitialized bool variable
wrong casting

cheers,
david


Index: xcompmgr.c
===================================================================
RCS file: /cvs/xenocara/app/xcompmgr/xcompmgr.c,v
retrieving revision 1.4
diff -N -u -p xcompmgr.c
--- xcompmgr.c	8 Nov 2009 10:27:36 -0000	1.4
+++ xcompmgr.c	2 Dec 2009 07:55:05 -0000
@@ -389,7 +389,7 @@ static conv *
 make_gaussian_map (Display *dpy, double r)
 {
     conv	    *c;
-    int		    size = ((int) ceil ((r * 3)) + 1) & ~1;
+    int		    size = (int)(ceil ((r * 3)) + 1) & ~1;
     int		    center = size / 2;
     int		    x, y;
     double	    t;
@@ -774,7 +774,9 @@ root_tile (Display *dpy)
     XRenderPictureAttributes	pa;
     int		    p;
 
+    fill = False;
     pixmap = None;
+
     for (p = 0; backgroundProps[p]; p++)
     {
 	if (XGetWindowProperty (dpy, root, XInternAtom (dpy, backgroundProps[p], False),