[udev] Switch local variable from static to auto

The 'iochannel' variable is marked static for no apparent reason.

Drop the 'static'.

Signed-off-by: Simo Piiroinen <simo.piiroinen@jollamobile.com>

src/usb_moded-udev.c

@@ -483,7 +483,7 @@ gboolean umudev_init(void)
     char                   *configured_device = NULL;
     char                   *configured_subsystem = NULL;
     struct udev_device     *dev = 0;
-    static GIOChannel      *iochannel  = 0;
+    GIOChannel             *iochannel = 0;
 
     int ret = 0;