Add a separator between two words in an exception message

Change-Id: I5c2e01249058e03edfcf036036f9595b87f0a070
Reviewed-on: https://gerrit.libreoffice.org/51963Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Tor Lillqvist <tml@collabora.com>
(cherry picked from commit 7e16966d)
Reviewed-on: https://gerrit.libreoffice.org/52087Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Miklos Vajna <vmiklos@collabora.co.uk>
Reviewed-on: https://gerrit.libreoffice.org/52310

scripting/source/protocolhandler/scripthandler.cxx

@@ -240,7 +240,7 @@ void SAL_CALL ScriptProtocolHandler::dispatchWithNotification(
 
             OUString reason = "ScriptProtocolHandler::dispatch: caught ";
 
-            invokeResult <<= reason.concat( aException.getValueTypeName() ).concat( e.Message );
+            invokeResult <<= reason.concat( aException.getValueTypeName() ).concat( ": " ).concat( e.Message );
 
             bCaughtException = true;
         }