[libsecret] configure: Fix syntax error

[Kalev Lember <klember src gnome org>]

commit b363b7e86eec499c8227a19655c1bc85a400b2e0
Author: Kalev Lember <kalevlember gmail com>
Date:   Thu Mar 29 13:52:19 2012 +0300

    configure: Fix syntax error
    
    checking build strict... ./configure: line 15065: =no: command not found

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 9e598e1..cf9a33a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -148,7 +148,7 @@ else
 	CFLAGS="$CFLAGS -Wno-error"
 	TEST_MODE="quick"
 	INTROSPECTION_FLAGS=""
-	$enable_strict="no"
+	enable_strict="no"
 fi
 
 AC_MSG_RESULT($enable_strict)