stat_client: Fix the type casting

Change-Id: I9726ac5cc7292a492928b213bc85ccfa8a26c1cb
Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
diff --git a/src/vpp-api/client/stat_client.c b/src/vpp-api/client/stat_client.c
index bd9d8cc..bb7f240 100644
--- a/src/vpp-api/client/stat_client.c
+++ b/src/vpp-api/client/stat_client.c
@@ -321,7 +321,7 @@
   int i, j;
   for (i = 0; i < vec_len (patterns); i++)
     {
-      int rv = regcomp (&regex[i], (char *) patterns[i], 0);
+      int rv = regcomp (&regex[i], (const char *) patterns[i], 0);
       if (rv)
 	{
 	  fprintf (stderr, "Could not compile regex %s\n", patterns[i]);
@@ -419,12 +419,14 @@
 }
 
 /* Create a vector from a string (or add to existing) */
-u8 **
-stat_segment_string_vector (u8 ** string_vector, char *string)
+uint8_t **
+stat_segment_string_vector (uint8_t ** string_vector, const char *string)
 {
-  u8 *name = 0;
-  name = vec_dup ((u8 *) string);
-  vec_add1 (string_vector, (u8 *) name);
+  uint8_t *name = 0;
+  size_t len = strlen (string);
+
+  vec_validate_init_c_string (name, string, len);
+  vec_add1 (string_vector, name);
   return string_vector;
 }
 
diff --git a/src/vpp-api/client/stat_client.h b/src/vpp-api/client/stat_client.h
index 52aaa24..89f6fe5 100644
--- a/src/vpp-api/client/stat_client.h
+++ b/src/vpp-api/client/stat_client.h
@@ -54,7 +54,8 @@
 int stat_segment_connect (const char *socket_name);
 void stat_segment_disconnect_r (stat_client_main_t * sm);
 void stat_segment_disconnect (void);
-uint8_t **stat_segment_string_vector (uint8_t ** string_vector, char *string);
+uint8_t **stat_segment_string_vector (uint8_t ** string_vector,
+				      const char *string);
 int stat_segment_vec_len (void *vec);
 void stat_segment_vec_free (void *vec);
 uint32_t *stat_segment_ls_r (uint8_t ** patterns, stat_client_main_t * sm);