build system: Fix yet another issue with the detection of libupsclient.

diff --git a/configure.in b/configure.in
index 68299545764d47e5065d2819a1d481588d0ef0fa..38373ac0e5a036a0836acca6732f0f5fbbcf6c4f 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -1259,7 +1259,7 @@ AC_ARG_WITH(libupsclient, [AS_HELP_STRING([--with-libupsclient@<:@=PREFIX@:>@],
                with_libupsclient="no"
        else
                with_libupsclient="yes"
-               if "x$withval" != "xyes"
+               if test "x$withval" != "xyes"
                then
                        if test -x "$withval"
                        then