m4: gmtime_tm_gmtoff.m4 - Modernize m4 syntax

diff --git a/m4/gmtime_tm_gmtoff.m4 b/m4/gmtime_tm_gmtoff.m4
index 57df6aeb1ea406883bdcc22c33424f859a5ce2f6..8665eda23e27650684a723caa6034b453fe0d87b 100644 (file)
--- a/m4/gmtime_tm_gmtoff.m4
+++ b/m4/gmtime_tm_gmtoff.m4
@@ -7,8 +7,8 @@ AC_DEFUN([DOVECOT_TM_GMTOFF], [
   [[struct tm *tm; return tm->tm_gmtoff;]])],
   [i_cv_field_tm_gmtoff=yes],
   [i_cv_field_tm_gmtoff=no])])
-  if test $i_cv_field_tm_gmtoff = yes; then
+  AS_IF([test $i_cv_field_tm_gmtoff = yes], [
           AC_DEFINE(HAVE_TM_GMTOFF,, [Define if you have struct tm->tm_gmtoff])
-  fi
+  ])
   AC_MSG_RESULT($i_cv_field_tm_gmtoff)
 ])