Hide annoying uninitialized warnings:
  sound/soc/codecs/wm8903.c:382: warning: ‘reg’ may be used uninitialized in this function
  sound/soc/codecs/wm8903.c:383: warning: ‘shift’ may be used uninitialized in this function
Signed-off-by: Takashi Iwai <tiwai@suse.de>
        struct wm8903_priv *wm8903 = codec->private_data;
        struct i2c_client *i2c = codec->control_data;
        u16 val;
-       u16 reg;
-       int shift;
+       u16 uninitialized_var(reg);
+       int uninitialized_var(shift);
        u16 cp_reg = wm8903_read(codec, WM8903_CHARGE_PUMP_0);
 
        switch (w->reg) {