tdf#85110 Add missing space to Untitled document name

When you create a new document, it is named as
"Untitled 1", "Untitled 2" etc. but the properties dialog
of the file is titled as "Untitled1", "Untitled2" etc.
This patch adds the missing space inbetween.

Change-Id: I63c6405f825d17b78fa05bf2b65d0b04d1ee0698
Reviewed-on: https://gerrit.libreoffice.org/27872Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: jan iversen <jani@documentfoundation.org>

sfx2/source/doc/objmisc.cxx

@@ -827,10 +827,10 @@ OUString SfxObjectShell::GetTitle
         if (pImpl->bIsNamedVisible)
         {
             // Append number
-            aNoName += OUString::number(pImpl->nVisualDocumentNumber);
+            aNoName += " " + OUString::number(pImpl->nVisualDocumentNumber);
         }
 
-        // Document called "noname" for the time being
+        // Document called "Untitled" for the time being
         return aNoName;
     }