remove unused variables

Author: lum1n0us

core/iwasm/libraries/libc-wasi/libc_wasi_wrapper.c

@@ -2147,7 +2147,6 @@ wasi_sock_recv(wasm_exec_env_t exec_env, wasi_fd_t sock, iovec_app_t *ri_data,
                wasi_roflags_t *ro_flags)
 {
     wasm_module_inst_t module_inst = get_module_inst(exec_env);
-    __wasi_addr_t src_addr;
     wasi_errno_t error;
 
     if (!validate_native_addr(ro_data_len, sizeof(*ro_data_len)))
@@ -2157,9 +2156,8 @@ wasi_sock_recv(wasm_exec_env_t exec_env, wasi_fd_t sock, iovec_app_t *ri_data,
         return __WASI_EINVAL;
 
     error = wasi_sock_recv_from(exec_env, sock, ri_data, ri_data_len, ri_flags,
-                                &src_addr, ro_data_len);
+                                NULL, ro_data_len);
     *ro_flags = ri_flags;
-
     return error;
 }