ALSA: ctxfi - Remove useless initializations and cast

Remove useless variable initializations and cast at the beginning of
functions.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/ctxfi/ctresource.c b/sound/pci/ctxfi/ctresource.c
index da21a71..889c495 100644
--- a/sound/pci/ctxfi/ctresource.c
+++ b/sound/pci/ctxfi/ctresource.c
@@ -27,7 +27,7 @@
 get_resource(u8 *rscs, unsigned int amount,
 	     unsigned int multi, unsigned int *ridx)
 {
-	int i = 0, j = 0, k = 0, n = 0;
+	int i, j, k, n;
 
 	/* Check whether there are sufficient resources to meet request. */
 	for (i = 0, n = multi; i < amount; i++) {
@@ -61,7 +61,7 @@
 
 static int put_resource(u8 *rscs, unsigned int multi, unsigned int idx)
 {
-	unsigned int i = 0, j = 0, k = 0, n = 0;
+	unsigned int i, j, k, n;
 
 	/* Mark the contiguous bits in resource bit-map as used */
 	for (n = multi, i = idx; n > 0; n--) {
@@ -76,7 +76,7 @@
 
 int mgr_get_resource(struct rsc_mgr *mgr, unsigned int n, unsigned int *ridx)
 {
-	int err = 0;
+	int err;
 
 	if (n > mgr->avail)
 		return -ENOENT;