[master] b3f801d fix typo: actually save LIBS in save_LIBS

[Nils Goroll]

commit b3f801d4e59e2901390bbb34f2ca7fd0cd64934a
Author: Nils Goroll <nils.goroll at uplex.de>
Date:   Mon Aug 22 14:56:58 2016 +0200

    fix typo: actually save LIBS in save_LIBS

diff --git a/configure.ac b/configure.ac
index e5c6a40..5f3e3bf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -145,7 +145,7 @@ if test "$enable_pcre_jit" = yes; then
   AC_MSG_CHECKING(for PCRE JIT usability)
   save_CFLAGS="${CFLAGS}"
   CFLAGS="${PCRE_CFLAGS}"
-  save_LIBS="${CFLAGS}"
+  save_LIBS="${LIBS}"
   LIBS="${PCRE_LIBS}"
   AC_RUN_IFELSE(
     [AC_LANG_PROGRAM([[