profilesafe: Make sure no recursive saving happens

Change-Id: Idd57a948fcaaf23614ca1a92051a50b86e4bb0c5
Reviewed-on: https://gerrit.libreoffice.org/30145
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Armin Le Grand <Armin.Le.Grand@cib.de>

comphelper/source/misc/backupfilehelper.cxx

@@ -2613,6 +2613,10 @@ namespace comphelper
                 maDirs,
                 maFiles);
 
+            // should not extist, but for the case an error occurred and it got
+            // copied somehow, avoid further recurive copying/saving
+            maDirs.erase("SafeMode");
+
             // not really needed, can be abandoned
             maDirs.erase("psprint");