uhd: fix warning by adding brackets for while(cond){};

3 files changed, 3 insertions, 3 deletions

diff --git a/host/examples/test_async_messages.cpp b/host/examples/test_async_messages.cpp
index 4c9d18121..0a5c076ea 100644
--- a/host/examples/test_async_messages.cpp
+++ b/host/examples/test_async_messages.cpp
@@ -58,7 +58,7 @@ void test_no_async_message(uhd::usrp::single_usrp::sptr sdev){
             "    Got unexpected event code 0x%x.\n"
         ) % async_md.event_code << std::endl;
         //clear the async messages
-        while (dev->recv_async_msg(async_md, 0));
+        while (dev->recv_async_msg(async_md, 0)){};
     }
     else{
         std::cout << boost::format(
diff --git a/host/lib/transport/libusb1_zero_copy.cpp b/host/lib/transport/libusb1_zero_copy.cpp
index d3888240b..b089d11e0 100644
--- a/host/lib/transport/libusb1_zero_copy.cpp
+++ b/host/lib/transport/libusb1_zero_copy.cpp
@@ -184,7 +184,7 @@ usb_endpoint::~usb_endpoint(void){
     }
 
     //collect canceled transfers (drain the queue)
-    while (this->get_lut_with_wait() != NULL);
+    while (this->get_lut_with_wait() != NULL){};
 
     //free all transfers
     BOOST_FOREACH(libusb_transfer *lut, _all_luts){
diff --git a/host/lib/usrp/usrp2/io_impl.cpp b/host/lib/usrp/usrp2/io_impl.cpp
index 91a1b2344..65411801d 100644
--- a/host/lib/usrp/usrp2/io_impl.cpp
+++ b/host/lib/usrp/usrp2/io_impl.cpp
@@ -150,7 +150,7 @@ void usrp2_impl::io_init(void){
         std::memcpy(send_buff->cast<void*>(), &data, sizeof(data));
         send_buff->commit(sizeof(data));
         //drain the recv buffers (may have junk)
-        while (data_transport->get_recv_buff().get());
+        while (data_transport->get_recv_buff().get()){};
     }
 
     //the number of recv frames is the number for the first transport