[Fix] Fix ClamAV result for cached encrypted file (#3395)

lualib/lua_scanners/clamav.lua

@@ -139,10 +139,11 @@ local function clamav_check(task, content, digest, rule)
           if string.find(vname, '^Heuristics%.Encrypted') then
             rspamd_logger.errx(task, '%s: File is encrypted', rule.log_prefix)
             common.yield_result(task, rule, 'File is encrypted: '.. vname, 0.0, 'encrypted')
-            cached = 'encrypted'
+            cached = 'ENCRYPTED'
           elseif string.find(vname, '^Heuristics%.OLE2%.ContainsMacros') then
             rspamd_logger.errx(task, '%s: ClamAV Found an OLE2 Office Macro', rule.log_prefix)
             common.yield_result(task, rule, vname, 0.0, 'macro')
+            cached = 'MACRO'
           elseif string.find(vname, '^Heuristics%.Limits%.Exceeded') then
             rspamd_logger.errx(task, '%s: ClamAV Limits Exceeded', rule.log_prefix)
             common.yield_result(task, rule, 'Limits Exceeded: '.. vname, 0.0, 'fail')