Find VBA-only functions when compiling first on module level

This likely never worked as there is no SbiInstance in that step,
but worked by chance when running a module's code that was
compiled with VBA support where the VBA-only function was added as
a symbol to be resolved later during runtime and then the
SbiInstance exists and the symbol was magically resolved.

Found when trying to correct vba_tests to actually fail if all
subtests fail that then started to fail in Atn.vb because of the
Round() function being VBA-only.

Change-Id: I7d9f6e2640a73388a2a58c3d180820c6ef85abe3
Reviewed-on: https://gerrit.libreoffice.org/45425Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Jenkins <ci@libreoffice.org>

basic/source/runtime/stdobj.cxx

@@ -769,11 +769,23 @@ SbxVariable* SbiStdObject::Find( const OUString& rName, SbxClassType t )
              && ( p->nHash == nHash_ )
              && ( rName.equalsIgnoreAsciiCaseAscii( p->pName ) ) )
             {
-                SbiInstance* pInst = GetSbData()->pInst;
                 bFound = true;
                 if( p->nArgs & COMPTMASK_ )
                 {
-                    if ( !pInst || ( pInst->IsCompatibility()  && ( NORMONLY_ & p->nArgs )  ) || ( !pInst->IsCompatibility()  && ( COMPATONLY_ & p->nArgs )  ) )
+                    bool bCompatibility = false;
+                    SbiInstance* pInst = GetSbData()->pInst;
+                    if (pInst)
+                    {
+                        bCompatibility = pInst->IsCompatibility();
+                    }
+                    else
+                    {
+                        // No instance running => compiling a source on module level.
+                        const SbModule* pModule = GetSbData()->pCompMod;
+                        if (pModule)
+                            bCompatibility = pModule->IsVBACompat();
+                    }
+                    if ((bCompatibility && (NORMONLY_ & p->nArgs)) || (!bCompatibility && (COMPATONLY_ & p->nArgs)))
                         bFound = false;
                 }
                 break;