m4: want_icu.m4 - Modernize m4 syntax

diff --git a/m4/want_icu.m4 b/m4/want_icu.m4
index 9127ebccb68428a947ced8ea000df2d6d8fc5986..9d165ccc08a6abef8631cf41a12341f1692ec145 100644 (file)
--- a/m4/want_icu.m4
+++ b/m4/want_icu.m4
@@ -1,12 +1,12 @@
 AC_DEFUN([DOVECOT_WANT_ICU], [
-  if test "$want_icu" != "no"; then
-    if test "$PKG_CONFIG" != "" && $PKG_CONFIG --exists icu-i18n 2>/dev/null; then
+  AS_IF([test "$want_icu" != "no"], [
+    AS_IF([test "$PKG_CONFIG" != "" && $PKG_CONFIG --exists icu-i18n 2>/dev/null], [
       PKG_CHECK_MODULES(LIBICU, icu-i18n)
       have_icu=yes
       AC_DEFINE(HAVE_LIBICU,, [Define if you want ICU normalization support for FTS])
-    elif test "$want_icu" = "yes"; then
+    ], [test "$want_icu" = "yes"], [
       AC_ERROR([Can't build with libicu support: libicu-i18n not found])
-    fi
-  fi
+    ])
+  ])
   AM_CONDITIONAL(BUILD_LIBICU, test "$have_icu" = "yes")
 ])