1) Fix gcc uninit'd var warnings by adding 'default' switch stmt labels
in two cases.  It was lightning-strikes unlikely that a problem would
ever arise, but not impossible.
2) Tighten the scope of 'blankword' in two cases.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
 {
        int cnt, frame_count, dly;
        IXJ_WORD dat;
-       BYTES blankword;
 
        frame_count = 0;
        if(j->flags.cidplay) {
                }
                if (frame_count >= 1) {
                        if (j->ver.low == 0x12 && j->play_mode && j->flags.play_first_frame) {
+                               BYTES blankword;
+
                                switch (j->play_mode) {
                                case PLAYBACK_MODE_ULAW:
                                case PLAYBACK_MODE_ALAW:
                                        break;
                                case PLAYBACK_MODE_8LINEAR:
                                case PLAYBACK_MODE_16LINEAR:
+                               default:
                                        blankword.low = blankword.high = 0x00;
                                        break;
                                case PLAYBACK_MODE_8LINEAR_WSS:
                                j->flags.play_first_frame = 0;
                        } else  if (j->play_codec == G723_63 && j->flags.play_first_frame) {
                                for (cnt = 0; cnt < 24; cnt++) {
+                                       BYTES blankword;
+
                                        if(cnt == 12) {
                                                blankword.low = 0x02;
                                                blankword.high = 0x00;
                bytes.high = 0xB0 + cr;
                break;
        case SOP_PU_PULSEDIALING:
+       default:
                bytes.high = 0xF0 + cr;
                break;
        }