radio interface: fix init

5561f1129d0bed0ebd2a49fde07e8ee91e487fd6 introduced some changes,
but while RadioInterface lost its call to close() that was previously
used to improperly reset the buffers upon init() that call was
accidentally not removed for RadioInterfaceMulti and
RadioInterfaceResamp, so those reset previously initialized values to 0
during init(), which break osmo-trx for weird setups.

Change-Id: I74fc1586f8ae0832f4093ba8a44a1c70c78ec3d8
diff --git a/Transceiver52M/radioInterfaceMulti.cpp b/Transceiver52M/radioInterfaceMulti.cpp
index eeb0c97..a7195b4 100644
--- a/Transceiver52M/radioInterfaceMulti.cpp
+++ b/Transceiver52M/radioInterfaceMulti.cpp
@@ -153,8 +153,6 @@
 		return false;
 	}
 
-	close();
-
 	convertSendBuffer.resize(1);
 	convertRecvBuffer.resize(1);
 
diff --git a/Transceiver52M/radioInterfaceResamp.cpp b/Transceiver52M/radioInterfaceResamp.cpp
index 37167ae..869acd0 100644
--- a/Transceiver52M/radioInterfaceResamp.cpp
+++ b/Transceiver52M/radioInterfaceResamp.cpp
@@ -98,8 +98,6 @@
 {
 	float cutoff = 1.0f;
 
-	close();
-
 	switch (type) {
 	case RadioDevice::RESAMP_64M:
 		resamp_inrate = RESAMP_64M_INRATE;