portalplayer: Fix three set-but-not-used warnings.

(They show up when building with gcc494)

Change-Id: Id5e2bccf18114ed78a557ac1b369f46b4f07d042

apps/iap/iap-lingo4.c

@@ -1480,6 +1480,7 @@ void iap_handlepkt_mode4(const unsigned int len, const unsigned char *buf)
                         }
                         break;
                 }
+		(void)len;  /* Shut up, compiler */
                 put_u32(&data[3], start_index+counter);
                 iap_send_pkt(data, 7 + strlen(data+7) + 1);
                 yield();

firmware/target/arm/pp/audio-pp.c

@@ -53,8 +53,10 @@ void audio_input_mux(int source, unsigned flags)
 {
     (void)flags;
     /* Prevent pops from unneeded switching */
+#ifdef HAVE_RECORDING
     static int last_source = AUDIO_SRC_PLAYBACK;
-#ifdef HAVE_FMRADIO_REC 
+#endif
+#ifdef HAVE_FMRADIO_REC
     bool recording = flags & SRCF_RECORDING;
     static bool last_recording = false;
 #endif
@@ -149,7 +151,9 @@ void audio_input_mux(int source, unsigned flags)
 #endif
     } /* end switch */
 
+#ifdef HAVE_RECORDING
     last_source = source;
+#endif
 } /* audio_input_mux */
 #endif
 

firmware/target/arm/pp/uart-pp.c

@@ -143,6 +143,8 @@ void serial_setup (void)
 
 #endif
 
+    (void)tmp;
+
     serial_bitrate(0);
 }