Fix MULTIBYTE typo.

src/configure.in

@@ -190,20 +190,19 @@ AC_ARG_ENABLE(
    AC_MSG_RESULT(disabled)
 )
 
-AC_MSG_CHECKING(setting MULTIBYE)
+AC_MSG_CHECKING(setting MULTIBYTE)
 AC_ARG_WITH(mb,
     [  --with-mb=<encoding> enable multi-byte support ], 
     [
 	case "$withval" in
 	EUC_JP|EHC_CN|EUC_KR|EUC_TW|UNICODE|MULE_INTERNAL|LATIN1|LATIN2|LATIN3|LATIN4|LATIN5)
-            MULTIBYTE="$withval";
 	    AC_MSG_RESULT("enabled with $withval")
             ;;
 	*)
 	    AC_MSG_ERROR([*** You must supply an argument to the --with-mb option one of EUC_JP,EHC_CN,EUC_KR,EUC_TW,UNICODE,MULE_INTERNAL,LATIN1-5])
 	  ;;
 	esac
-	MULTIBYTEB="$withval"
+	MULTIBYTE="$withval"
     ],
     AC_MSG_RESULT("disabled")
 )