Fix memory leak for BASIC sub (as well as void function)

d88593af59d9126cdbcd6c0a5b06fb9c673dc6f9 "INTEGRATION: CWS ab34: #i73457#
Prevent sub from beeing set as param 0 for return type void" to fix i#73457
"Memory Leak in all Basic type void Method calls" had made the PutDirect call
dependent on != SbxVOID only (which would cover void functions) but not also on
!= SbxEMPTY (which would apparently be required to also cover subs, as seen with
CppunitTest_basic_vba run under lsan).  Either this was an oversight with the
original fix, or subs have meanwhile changed from GetType() == SbxVOID to
SbxEMPTY?

Change-Id: I3e5dbf79bfd5eea3cfec8ed3fa984d13167aa501

basic/source/classes/sbxmod.cxx

@@ -2172,8 +2172,14 @@ void SbMethod::Broadcast( sal_uIntPtr nHintId )
         if( mpPar.Is() )
         {
             // Enrigister this as element 0, but don't reset the parent!
-            if( GetType() != SbxVOID )
+            switch( GetType() ) {
+            case SbxEMPTY:
+            case SbxVOID:
+                break;
+            default:
                 mpPar->PutDirect( pThisCopy, 0 );
+                break;
+            }
             SetParameters( NULL );
         }