More debug in read_into

src/zm_buffer.cpp

@@ -65,8 +65,9 @@ unsigned int Buffer::expand(unsigned int count) {
 int Buffer::read_into(int sd, unsigned int bytes) {
   // Make sure there is enough space
   this->expand(bytes);
-  int bytes_read = read(sd, mTail, bytes);
-  if ( bytes_read > 0 ) {
+  Debug(3, "Reading %u btes", bytes);
+  int bytes_read = ::read(sd, mTail, bytes);
+  if (bytes_read > 0) {
     mTail += bytes_read;
     mSize += bytes_read;
   }