wordsplit: minor fix in return_delims mode

* libmailutils/string/wordsplit.c (scan_word): Return only one delimiter
if MU_WRDSF_RETURN_DELIMS is on
* libmailutils/tests/wordsplit.at: Reflect that.

@@ -1155,12 +1155,8 @@ scan_word (struct mu_wordsplit *wsp, size_t start)
     }
   else if (wsp->ws_flags & MU_WRDSF_RETURN_DELIMS)
     {
-      do
-	{
       i++;
     }
-      while (i < len && ISDELIM (wsp, command[i]));
-    }
   else if (!(wsp->ws_flags & MU_WRDSF_SQUEEZE_DELIMS))
     flags |= _WSNF_EMPTYOK;
 

@@ -275,16 +275,17 @@ TESTWSP([custom, with returned delimiters],[],[delim : -ws trimnl return_delims]
 
 TESTWSP([custom, with returned & squeezed delimiters],[],[delim : -ws trimnl return_delims -squeeze_delims],
 [semicolon: separated::list: of :words],
-[NF: 9
+[NF: 10
 0: semicolon
 1: :
 2: " separated"
-3: ::
-4: list
-5: :
-6: " of "
-7: :
-8: words
+3: :
+4: :
+5: list
+6: :
+7: " of "
+8: :
+9: words
 ])
 
 TESTWSP([sed expressions],[],[sed],