update tests.

tests/stem_word.result

 USE mysql;
 SELECT stem_word();
-ERROR HY000: stem_word() requires 2 arguments (language, word)
+ERROR HY000: Can't initialize function 'stem_word'; stem_word() requires 2 arguments (language, word)
 SELECT stem_word("dutch");
-ERROR HY000: stem_word() requires 2 arguments (language, word)
+ERROR HY000: Can't initialize function 'stem_word'; stem_word() requires 2 arguments (language, word)
 SELECT stem_word("dutch", "deuren");
 stem_word("dutch", "deuren")
 deur
 SELECT stem_word("dutch", "deuren boekjes;stuiter stuiteren auto's");
 stem_word("dutch", "deuren boekjes;stuiter stuiteren auto's")
-deur boek stuiter stuiter auto
+deur boekjes stuiter stuiter auto'
 SELECT stem_word("english", "cars#bars#opening");
 stem_word("english", "cars#bars#opening")
 car bar open

tests/stem_word.test

@@ -14,8 +14,8 @@ USE mysql;
 # Tests for stem_word
 ###
 
-error 0; SELECT stem_word();
-error 0; SELECT stem_word("dutch");
+error 1123; SELECT stem_word();
+error 1123; SELECT stem_word("dutch");
 SELECT stem_word("dutch", "deuren");
 SELECT stem_word("dutch", "deuren boekjes;stuiter stuiteren auto's");
 SELECT stem_word("english", "cars#bars#opening");
\ No newline at end of file