remove unnecessary typecasting of malloc()

ares_init.c

@@ -675,7 +675,7 @@ DhcpNameServer
       {
         if (bytes)
         {
-          line = (char *)malloc(bytes+1);
+          line = malloc(bytes+1);
           if (RegQueryValueEx(mykey, NAMESERVER, NULL, &data_type,
                               (unsigned char *)line, &bytes) ==
               ERROR_SUCCESS)
@@ -952,7 +952,7 @@ static int init_by_defaults(ares_channel channel)
     size_t len = 64;
     int res;
 
-    hostname = (char *)malloc(len);
+    hostname = malloc(len);
     if(!hostname) {
       rc = ARES_ENOMEM;
       goto error;

ares_parse_ptr_reply.c

@@ -77,7 +77,7 @@ int ares_parse_ptr_reply(const unsigned char *abuf, int alen, const void *addr,
 
   /* Examine each answer resource record (RR) in turn. */
   hostname = NULL;
-  aliases = (char **) malloc(8 * sizeof(char *));
+  aliases = malloc(8 * sizeof(char *));
   if (!aliases)
     {
       free(ptrname);