[PATCH] configure.ac: Fix gettimeofday check for C99 compilers

[Florian Weimer]

* configure.ac (HAVE_GETTIMEOFDAY): Avoid reference to undeclared
exit function.
---
 configure.ac | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index f6919a7..5897ae5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -127,8 +127,8 @@ AC_CACHE_CHECK([for standard gettimeofday], 
[ac_cv_func_gettimeofday],
                   int main ()
                   {
                     struct timeval t; t.tv_sec = -1; t.tv_usec = -1;
-                    exit (gettimeofday (&t, 0) != 0
-                          || t.tv_sec < 0 || t.tv_usec < 0);
+                    return gettimeofday (&t, 0) != 0
+                          || t.tv_sec < 0 || t.tv_usec < 0;
                   }]])],
                   [ac_cv_func_gettimeofday=yes],
                   [ac_cv_func_gettimeofday=no],
-- 
2.21.0