build-sys: check HAVE_ definitions with #ifdef [smatch scan]

Fix to `warning: undefined preprocessor identifier' messages.

Signed-off-by: Sami Kerola <kerolasa@iki.fi>

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/env.c b/lib/env.c
index 770cadff9..e6d119f6f 100644
--- a/lib/env.c
+++ b/lib/env.c
@@ -89,7 +89,7 @@ char *safe_getenv(const char *arg)
 
 	if (ruid != 0 || (ruid != geteuid()) || (getgid() != getegid()))
 		return NULL;
-#if HAVE_PRCTL
+#ifdef HAVE_PRCTL
 	if (prctl(PR_GET_DUMPABLE, 0, 0, 0, 0) == 0)
 		return NULL;
 #else