diff -aurN 002/configure.ac 003/configure.ac
--- 002/configure.ac	2021-05-10 13:13:03.400121700 +0800
+++ 003/configure.ac	2021-05-10 14:00:58.051254800 +0800
@@ -342,7 +342,7 @@
 AC_ARG_ENABLE(nls, AC_HELP_STRING([--disable-nls], [disable installation of translation files]), enable_i18n="$enableval", enable_i18n=yes)
 
 if test x$enable_i18n = xyes; then
-	AC_PROG_INTLTOOL
+AC_PROG_INTLTOOL
 	GETTEXT_PACKAGE=pidgin
 	AC_SUBST(GETTEXT_PACKAGE)