Made EL737 send an empty string in MsgTxt on success

Fixed a type in an error message

sinqEPICSApp/src/devScalerEL737.c

@@ -225,7 +225,7 @@ static long el737_init_record(scalerRecord *psr, CALLBACK *pcallback)
   status = pasynOctetSyncIO->connect(port, 0, &priv->asynContext, NULL);
   if (status) {
     asynPrint(dummyUser, ASYN_TRACE_ERROR, 
-      "%s: cannot connect to EL734 controller\n",
+      "%s: cannot connect to EL737 controller\n",
       "el737_init_scaler");
     psr->pact = 1;
     return 0;
@@ -343,7 +343,7 @@ static asynStatus el737_transactCommand(EL737priv *priv,char command[COMLEN],cha
 
   pasynOctetSyncIO->flush(priv->asynContext);
   
-  strcpy(message,"OK");
+  strcpy(message,"");
   status = pasynOctetSyncIO->writeRead(priv->asynContext, command, strlen(command),
 				       reply,COMLEN, 1.,&out,&in,&reason); 
   if(status == asynSuccess){