TEMPORARY: fix gcc-4.8 warnings with latest patch set

Author: mwilck

libmpathpersist/mpath_persist_int.c

@@ -269,10 +269,10 @@ void preempt_missing_path(struct multipath *mpp, uint8_t *key, uint8_t *sa_key,
 			  int noisy)
 {
 	uint8_t zero[8] = {0};
-	struct prin_resp resp = {0};
+	struct prin_resp resp = {{{0}}};
 	int rq_scope;
 	unsigned int rq_type;
-	struct prout_param_descriptor paramp = {0};
+	struct prout_param_descriptor paramp = {.sa_flags = 0};
 	int status;
 
 	/*
@@ -494,7 +494,7 @@ static int mpath_prout_rel(struct multipath *mpp,int rq_servact, int rq_scope,
 	int rc;
 	int count = 0;
 	int status = MPATH_PR_SUCCESS;
-	struct prin_resp resp = {0};
+	struct prin_resp resp = {{{0}}};
 	uint16_t udev_flags = (mpp->skip_kpartx) ? MPATH_UDEV_NO_KPARTX_FLAG : 0;
 	bool did_resume = false;
 
@@ -670,7 +670,7 @@ static int mpath_prout_rel(struct multipath *mpp,int rq_servact, int rq_scope,
 static int reservation_key_matches(struct multipath *mpp, uint8_t *key,
 				   int noisy)
 {
-	struct prin_resp resp = {0};
+	struct prin_resp resp = {{{0}}};
 	int status;
 
 	status = mpath_prin_activepath(mpp, MPATH_PRIN_RRES_SA, &resp, noisy);

multipathd/main.c

@@ -4228,7 +4228,7 @@ main (int argc, char *argv[])
 
 static void check_prhold(struct multipath *mpp, struct path *pp)
 {
-	struct prin_resp resp = {0};
+	struct prin_resp resp = {{{0}}};
 	int status;
 
 	if (mpp->prflag == PR_UNSET) {