Merge pull request #182 from LudwigOrtmann/make_clang_happy

Fix some clang warnings in native

cpu/native/lpm_cpu.c

@@ -44,18 +44,17 @@ void lpm_init(void)
 void _native_lpm_sleep()
 {
 #ifdef MODULE_UART0
-    int retval, nfds;
+    int nfds;
 
     /* set fds */
-    nfds = 0;
     FD_ZERO(&_native_rfds);
     nfds = _native_set_uart_fds();
     nfds++;
 
-    retval = select(nfds, &_native_rfds, NULL, NULL, NULL);
-    DEBUG("_native_lpm_sleep: retval: %i\n", retval);
+    nfds = select(nfds, &_native_rfds, NULL, NULL, NULL);
+    DEBUG("_native_lpm_sleep: returned: %i\n", nfds);
 
-    if (retval != -1) {
+    if (nfds != -1) {
         /* uart ready, handle input */
         /* TODO: switch to ISR context */
         _native_handle_uart0_input();

sys/shell/commands/sc_nativenet.c

@@ -26,12 +26,10 @@
 
 #define TEXT_SIZE           (255) /* XXX: this aint enough for everybody */
 
-char text_msg[TEXT_SIZE];
-msg_t mesg;
-transceiver_command_t tcmd;
-
 void _nativenet_get_set_address_handler(char *addr)
 {
+    msg_t mesg;
+    transceiver_command_t tcmd;
     uint16_t a;
 
     tcmd.transceivers = TRANSCEIVER_NATIVE;
@@ -53,6 +51,8 @@ void _nativenet_get_set_address_handler(char *addr)
 
 void _nativenet_get_set_channel_handler(char *chan)
 {
+    msg_t mesg;
+    transceiver_command_t tcmd;
     uint8_t c;
 
     tcmd.transceivers = TRANSCEIVER_NATIVE;
@@ -74,6 +74,10 @@ void _nativenet_get_set_channel_handler(char *chan)
 
 void _nativenet_send_handler(char *pkt)
 {
+    msg_t mesg;
+    transceiver_command_t tcmd;
+    char text_msg[TEXT_SIZE];
+
     radio_packet_t p;
     uint32_t response;
     uint16_t addr;
@@ -109,6 +113,8 @@ void _nativenet_send_handler(char *pkt)
 
 void _nativenet_monitor_handler(char *mode)
 {
+    msg_t mesg;
+    transceiver_command_t tcmd;
     uint8_t m;
 
     tcmd.transceivers = TRANSCEIVER_NATIVE;