fix a style convention

features/netsocket/RAWIPSocket.h

@@ -33,7 +33,7 @@ public:
      *
      *  @note Must call open to initialize the socket on a network stack.
      */
-	RAWIPSocket();
+    RAWIPSocket();
 
     /** Create and open a socket on the network stack of the given
      *  network interface.

features/netsocket/nsapi_types.h

@@ -215,7 +215,7 @@ typedef void *nsapi_socket_t;
 typedef enum nsapi_protocol {
     NSAPI_TCP, /*!< Socket is of TCP type */
     NSAPI_UDP, /*!< Socket is of UDP type */
-	NSAPI_ICMP, /*!< Socket is of ICMP type */
+    NSAPI_ICMP, /*!< Socket is of ICMP type */
 } nsapi_protocol_t;
 
 /** Enum of standardized stack option levels