config: Fix check for argp_parse to pass &argv

Right now it's passing a char* when it expects a char** instead.

This usually produces a warning that may go unnoticed, but if CFLAGS
contains -Werror, that breaks the ./configure run with the following
error:

  $ ./configure CFLAGS=-Werror
  ...
  configure: WARNING: "libc does not have argp"
  checking for argp_parse in -largp... no
  configure: error: "no libargp found"

Tested: Checked that after this fix, running ./configure CFLAGS=-Werror
works as expected and argp_parse is correctly detected.

Signed-off-by: Filipe Brandenburger <[email protected]>

1 files changed, 4 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 31f346f3..f2b5c8fa 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2016-05-02  Filipe Brandenburger  <[email protected]>
+
+	* configure.ac (argp check): Pass pass &argv.
+
 2016-03-31  Mark Wielaard  <[email protected]>
 
 	* configure.ac: Set version to 0.166.