Fix a dumb typo.

gfx/src/xlib/nsDeviceContextXlib.cpp

@@ -80,8 +80,7 @@ NS_IMETHODIMP nsDeviceContextXlib::Init(nsNativeWidget aNativeWidget)
   {
     once = PR_FALSE;
 
-    printf("nsDeviceContextXlib::Init(dpy=%p  screen=%p  visual=%p  depth=%d)\
-n",
+    printf("nsDeviceContextXlib::Init(dpy=%p  screen=%p  visual=%p  depth=%d)\n",
            mDisplay,
            mScreen,
            mVisual,