capabilities: initialize has_cap

Initialize has_cap in cap_bprm_set_creds()

Reported-by: Andrew G. Morgan <morgan@kernel.org>
Signed-off-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/security/commoncap.c b/security/commoncap.c
index 0f620c5..ee4f848 100644
--- a/security/commoncap.c
+++ b/security/commoncap.c
@@ -479,7 +479,7 @@
 {
 	const struct cred *old = current_cred();
 	struct cred *new = bprm->cred;
-	bool effective, has_cap;
+	bool effective, has_cap = false;
 	int ret;
 
 	effective = false;