02_FTUISRV: fix empty loop includes results

git-svn-id: https://svn.fhem.de/fhem/trunk/fhem@22901 2b470e98-0d58-463d-a4d8-8e2adae1ed80

CHANGED

@@ -1,5 +1,6 @@
 # Add changes at the top of the list. Keep it in ASCII, and 80-char wide.
 # Do not insert empty lines here, update check depends on it.
+ - bugfix:  02_FTUISRV: fix empty loop includes results 
  - feature: 31_HUEDevice: added gesture reading for Aqara Cube
                           added readingList attribute
  - feature: 50_SSChatBot: new getter apiInfo

FHEM/02_FTUISRV.pm

@@ -75,7 +75,7 @@
 #   doc change on ftui-if
 
 #   FIX: changed replaceSetmagic to hand over real device hash
-#   
+#   FIX: $result might be undefined in some cases for loop/if
 #   
 ################################################################
 #TODO:
@@ -852,6 +852,8 @@ sub FTUISRV_handleLoopInc( $$$$$$ ) {
 
     # Evaluate expression as command to get list of entries for loop ???
     my $result = AnalyzeCommand(undef, $expr);     
+
+    $result = "" if ( ! $result );
     
     # Identify split char ???