Spawn: Applied KERNEL_ERROR's patch.

src/init.c

@@ -141,7 +141,7 @@ init_root(void)
      XChangeWindowAttributes(dpy, ROOT, CWEventMask | CWCursor, &at);
 
      if(conf.root.background_command)
-          spawn(conf.root.background_command);
+          spawn("%s", conf.root.background_command);
 
      ewmh_init_hints();
      ewmh_get_number_of_desktop();

src/mouse.c

@@ -180,7 +180,6 @@ mouse_resize(Client *c)
         || c->state_fullscreen || c->state_dock)
           return;
 
-
      XQueryPointer(dpy, ROOT, &w, &w, &omx, &omy, &d, &d, (uint *)&u);
 
      if((omx - c->geo.x) < (c->geo.width / 2))

src/util.c

@@ -257,5 +257,5 @@ swap_ptr(void **x, void **y)
 void
 uicb_spawn(uicb_t cmd)
 {
-     spawn(cmd);
+     spawn("%s", cmd);
 }