fix configure check by avoiding main(main(...))

AC_TRY_LINK automatically wraps a main(). Double main() causes this test to fail
on some compilers.

diff --git a/source3/configure.in b/source3/configure.in
index 2af1545d58164f9cd1c11446660dfa2b84c3f240..ab5e81fb3c58eb6492e1c58a4983d18d27fc427f 100644 (file)
--- a/source3/configure.in
+++ b/source3/configure.in
@@ -1177,13 +1177,10 @@ if test x"$LIBUNWIND_PTRACE" != x"" ; then
 #endif
            ],
            [
-               int main(int argc, const char ** argv)
-               {
-                       pid_t me = (pid_t)-1;
-                       ptrace(PTRACE_ATTACH, me, 0, 0);
-                       ptrace(PTRACE_DETACH, me, 0, 0);
-                       return 0;
-               }
+               pid_t me = (pid_t)-1;
+               ptrace(PTRACE_ATTACH, me, 0, 0);
+               ptrace(PTRACE_DETACH, me, 0, 0);
+               return 0;
            ],
            [
                AC_MSG_RESULT(yes)