build-sys: free() needs stdlib.h

followup 4f310fae

CC: Sami Kerola <kerolasa@iki.fi>
Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>

diff --git a/configure.ac b/configure.ac
index 3d77307fbd32ec7db4f3c4bf56a483f50ba77d4b..de299d3412d3d78934e9471c83bbdd2516bdfa5d 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -480,6 +480,7 @@ AX_CHECK_TLS
 
 AC_DEFUN([UL_SCANF_TYPE_MODIFIER], [dnl
 # include <stdio.h>
+# include <stdlib.h>
 int main()
 {
        int i;