Initialize variables that some compilers seem to warn about

src/libcharon/plugins/vici/vici_control.c

@@ -138,7 +138,7 @@ static child_cfg_t* find_child_cfg(char *name, peer_cfg_t **out)
 {
 	enumerator_t *enumerator;
 	peer_cfg_t *peer_cfg;
-	child_cfg_t *child_cfg;
+	child_cfg_t *child_cfg = NULL;
 
 	enumerator = charon->backends->create_peer_cfg_enumerator(
 							charon->backends, NULL, NULL, NULL, NULL, IKE_ANY);

src/libcharon/sa/ikev2/authenticators/pubkey_authenticator.c

@@ -321,7 +321,7 @@ METHOD(authenticator_t, build, status_t,
 	chunk_t auth_data;
 	status_t status;
 	auth_payload_t *auth_payload;
-	auth_method_t auth_method;
+	auth_method_t auth_method = AUTH_NONE;
 
 	id = this->ike_sa->get_my_id(this->ike_sa);
 	auth = this->ike_sa->get_auth_cfg(this->ike_sa, TRUE);

src/libstrongswan/plugins/plugin_feature.c

@@ -59,7 +59,7 @@ ENUM(plugin_feature_names, FEATURE_NONE, FEATURE_CUSTOM,
  */
 u_int32_t plugin_feature_hash(plugin_feature_t *feature)
 {
-	chunk_t data;
+	chunk_t data = chunk_empty;
 
 	switch (feature->type)
 	{

src/libstrongswan/utils/utils/string.c

@@ -44,7 +44,7 @@ char* translate(char *str, const char *from, const char *to)
 char* strreplace(const char *str, const char *search, const char *replace)
 {
 	size_t len, slen, rlen, count = 0;
-	char *res, *pos, *found, *dst;
+	char *res, *pos, *found = NULL, *dst;
 
 	if (!str || !*str || !search || !*search || !replace)
 	{