autofs-5.1.8 - restore gcc flags after autoconf Kerberos 5 check

From: Thomas Reim <reimth@gmail.com>

Heavily modified LIBS and CFLAGS harm succeeding configure checks

Signed-off-by: Thomas Reim <reimth@gmail.com>
Signed-off-by: Ian Kent <raven@themaw.net>
---
 CHANGELOG  |    1 +
 aclocal.m4 |    3 +++
 2 files changed, 4 insertions(+)

diff --git a/CHANGELOG b/CHANGELOG
index 5bb47099..68365e86 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -29,6 +29,7 @@
 - handle innetgr() not present in musl.
 - fix missing unlock in sasl_do_kinit_ext_cc().
 - fix a couple of null cache locking problems.
+- restore gcc flags after autoconf Kerberos 5 check.
 
 19/10/2021 autofs-5.1.8
 - add xdr_exports().
diff --git a/aclocal.m4 b/aclocal.m4
index 33561aae..c671b5b0 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -296,6 +296,9 @@ else
   LIBS="$LIBS $KRB5_LIBS"
 
   AC_CHECK_FUNCS([krb5_principal_get_realm])
+
+  CFLAGS="$SAVE_CFLAGS"
+  LIBS="$SAVE_LIBS"
 fi])
 
 dnl --------------------------------------------------------------------------