Fix warning on make due to missing cast (int)

* src/qemu/qemu_monitor.c src/qemu/qemu_monitor_text.c: cast size_t to
  int when passing to '%d'

src/qemu/qemu_monitor.c

@@ -179,7 +179,7 @@ qemuMonitorIOProcess(qemuMonitorPtr mon)
     if (mon->msg && mon->msg->txOffset == mon->msg->txLength)
         msg = mon->msg;
 
-    VIR_DEBUG("Process %d", mon->bufferOffset);
+    VIR_DEBUG("Process %d", (int)mon->bufferOffset);
     len = qemuMonitorTextIOProcess(mon,
                                    mon->buffer, mon->bufferOffset,
                                    msg);
@@ -196,7 +196,7 @@ qemuMonitorIOProcess(qemuMonitorPtr mon)
         VIR_FREE(mon->buffer);
         mon->bufferOffset = mon->bufferLength = 0;
     }
-    VIR_DEBUG("Process done %d used %d", mon->bufferOffset, len);
+    VIR_DEBUG("Process done %d used %d", (int)mon->bufferOffset, len);
     if (msg && msg->finished)
         virCondBroadcast(&mon->notify);
     return len;
@@ -319,7 +319,7 @@ qemuMonitorIORead(qemuMonitorPtr mon)
         mon->buffer[mon->bufferOffset] = '\0';
     }
 
-    VIR_DEBUG("Now read %d bytes of data", mon->bufferOffset);
+    VIR_DEBUG("Now read %d bytes of data", (int)mon->bufferOffset);
 
     return ret;
 }

src/qemu/qemu_monitor_text.c

@@ -172,7 +172,7 @@ int qemuMonitorTextIOProcess(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
 
     /* Don't print raw data in debug because its full of control chars */
     /*VIR_DEBUG("Process data %d byts of data [%s]", len - used, data + used);*/
-    VIR_DEBUG("Process data %d byts of data", len - used);
+    VIR_DEBUG("Process data %d byts of data", (int)(len - used));
 
     /* Look for a non-zero reply followed by prompt */
     if (msg && !msg->finished) {