m4: want_cdb.m4 - Modernize m4 syntax

diff --git a/m4/want_cdb.m4 b/m4/want_cdb.m4
index b18ff490c67e66b62294d9b43946a63a68c536e4..c0e083cfe8342a178cc01672fc212eddb2e519f3 100644 (file)
--- a/m4/want_cdb.m4
+++ b/m4/want_cdb.m4
@@ -1,19 +1,19 @@
 AC_DEFUN([DOVECOT_WANT_CDB], [
-  if test $want_cdb != no; then
+  AS_IF([test "$want_cdb" != "no"], [
     AC_CHECK_LIB(cdb, cdb_init, [
       AC_CHECK_HEADER(cdb.h, [
         DICT_LIBS="$DICT_LIBS -lcdb"
         dict_drivers="$dict_drivers cdb"
         AC_DEFINE(BUILD_CDB,, [Build with CDB support])
       ], [
-        if test $want_cdb = yes; then
+        AS_IF([test "$want_cdb" = "yes"], [
           AC_ERROR([Can't build with CDB support: cdb.h not found])
-        fi
+        ])
       ])
     ], [
-      if test $want_cdb = yes; then
+      AS_IF([test "$want_cdb" = "yes"], [
         AC_ERROR([Can't build with CDB support: libcdb not found])
-      fi
+      ])
     ])
-  fi
+  ])
 ])