auth: Some code style fixes

Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>

src/auth.c

@@ -727,6 +727,7 @@ struct ssh_agent_state_struct {
 /* Internal function */
 void ssh_agent_state_free(void *data) {
     struct ssh_agent_state_struct *state = data;
+
     if (state) {
         ssh_string_free_char(state->comment);
         ssh_key_free(state->pubkey);
@@ -760,6 +761,7 @@ int ssh_userauth_agent(ssh_session session,
                        const char *username) {
     int rc = SSH_AUTH_ERROR;
     struct ssh_agent_state_struct *state;
+
     if (session == NULL) {
         return SSH_AUTH_ERROR;
     }
@@ -767,6 +769,7 @@ int ssh_userauth_agent(ssh_session session,
     if (!ssh_agent_is_running(session)) {
         return SSH_AUTH_DENIED;
     }
+
     if (!session->agent_state) {
         session->agent_state = malloc(sizeof(struct ssh_agent_state_struct));
         if (!session->agent_state) {
@@ -776,9 +779,11 @@ int ssh_userauth_agent(ssh_session session,
         ZERO_STRUCTP(session->agent_state);
         session->agent_state->state=SSH_AGENT_STATE_NONE;
     }
+
     state = session->agent_state;
-    if (state->pubkey == NULL)
+    if (state->pubkey == NULL) {
         state->pubkey = ssh_agent_get_first_ident(session, &state->comment);
+    }
 
     if (state->pubkey == NULL) {
         return SSH_AUTH_DENIED;
@@ -1283,15 +1288,19 @@ static int ssh_userauth_kbdint_init(ssh_session session,
                                     const char *submethods)
 {
     int rc;
-    if (session->pending_call_state == SSH_PENDING_CALL_AUTH_KBDINT_INIT)
+
+    if (session->pending_call_state == SSH_PENDING_CALL_AUTH_KBDINT_INIT) {
         goto pending;
+    }
     if (session->pending_call_state != SSH_PENDING_CALL_NONE) {
         ssh_set_error_invalid(session);
         return SSH_ERROR;
     }
+
     rc = ssh_userauth_request_service(session);
-    if (rc == SSH_AGAIN)
+    if (rc == SSH_AGAIN) {
         return SSH_AUTH_AGAIN;
+    }
     if (rc != SSH_OK) {
         return SSH_AUTH_ERROR;
     }
@@ -1558,8 +1567,9 @@ int ssh_userauth_kbdint(ssh_session session, const char *user,
  * @returns             The number of prompts.
  */
 int ssh_userauth_kbdint_getnprompts(ssh_session session) {
-  if(session==NULL)
+    if (session == NULL) {
         return SSH_ERROR;
+    }
     if (session->kbdint == NULL) {
         ssh_set_error_invalid(session);
         return SSH_ERROR;
@@ -1579,8 +1589,9 @@ int ssh_userauth_kbdint_getnprompts(ssh_session session) {
  * @returns             The name of the message block. Do not free it.
  */
 const char *ssh_userauth_kbdint_getname(ssh_session session) {
-  if(session==NULL)
+    if (session == NULL) {
         return NULL;
+    }
     if (session->kbdint == NULL) {
         ssh_set_error_invalid(session);
         return NULL;
@@ -1664,8 +1675,9 @@ const char *ssh_userauth_kbdint_getprompt(ssh_session session, unsigned int i,
  * @returns             The number of answers.
  */
 int ssh_userauth_kbdint_getnanswers(ssh_session session) {
-  if(session==NULL || session->kbdint == NULL)
+    if (session == NULL || session->kbdint == NULL) {
         return SSH_ERROR;
+    }
     return session->kbdint->nanswers;
 }
 
@@ -1711,8 +1723,9 @@ const char *ssh_userauth_kbdint_getanswer(ssh_session session, unsigned int i) {
  */
 int ssh_userauth_kbdint_setanswer(ssh_session session, unsigned int i,
     const char *answer) {
-  if (session == NULL)
+    if (session == NULL) {
         return -1;
+    }
     if (answer == NULL || session->kbdint == NULL ||
             i >= session->kbdint->nprompts) {
         ssh_set_error_invalid(session);